1、 Price trend

Aniline prices in Shandong and Nanjing fell this week, according to a large number of data in the list of business agencies. On Friday, the market price of aniline in Shandong Province was 6450 yuan / ton, 3.01% lower than that of 6650 yuan / ton on Friday, and that in Nanjing was 6750 yuan / ton, 4.93% lower than that of 7100 yuan / ton on Friday.

2、 Analysis and comment

Raw materials: the listing price of pure benzene on Friday is 5700-5900 yuan / ton, 0.88% higher than last week. This week, the port inventory of pure benzene continued to decline compared with last week, and the domestic pure benzene spot shortage and other good support, the domestic pure benzene price continued to rise in the first half of the week. However, due to Sinopec’s lack of price adjustment guidance in the second half of the week, the market’s rising mentality fell and the price was stable.

Product: aniline rose 8.51% driven by rising cost. Due to the rapid rise last week and the weak demand in the downstream itself, most of the aniline factories had difficulties in shipping this week.

3、 Future expectation

Raw materials: the downstream products of pure benzene need to be soft and the profit is thin, or the market of pure benzene will be limited. In the later stage, it is necessary to pay attention to the start-up load change of downstream and hydrobenzene units.

At present, the profit of aniline has been close to the cost line, and the expectation of upstream pure benzene has not been lowered significantly in the short term.

It is predicted that the short-term aniline operation will be stable and weak, and the later stage will focus on the enterprise inventory and pure benzene dynamics.

I. price trend

On December 13, the antimony commodity index was 55.16, unchanged from yesterday, down 46.09% from 102.32 (2012-10-16), the highest point in the cycle, and up 17.41% from 46.98, the lowest point on December 24, 2015. (Note: cycle refers to 2012-09-08 to now).

II. Market analysis

Upstream and downstream: antimony oxide fell with the trend of antimony ingot on Wednesday, and the transaction was light. As of Friday, the average price of antimony trioxide was 99.5% at 34000 yuan / ton and 99.8% at 36500 yuan / ton.

Domestic market: the market price of antimony ingot is low this week, the market trading is limited, and the transaction is low. By the end of the year, most enterprises have completed the settlement, some manufacturers have suspended the shipment, the downstream purchase intention is low, and the overall market is mainly waiting. As of Friday, the average price of 2 × low bismuth antimony ingots was 37750 yuan / ton, 1 × antimony ingots was 38250 yuan / ton, 0 × antimony ingots was 39250 yuan / ton, and 2 × high bismuth antimony ingots was 35750 yuan / ton.

Nonferrous Industry: leading by the strong breakthrough of copper, the basic metals have stepped out of the low-lying area and kept rising. At the beginning of the week, the market continued the positive sentiment brought by the non-agricultural data on Friday. The announcement of the Federal Reserve’s interest rate meeting held confidence in the future economic development and long positions increased into the market. After the week, the European Central Bank’s interest rate meeting stated that the loose policy is still the same, and the Conservative Party of the British general election is set. Next year, 1 In May, the brexit is expected to be completed, the pound soared, the US dollar fell below the 97 point mark, and the base metal soared again. The market expects that the US will postpone the imposition of trade tariffs on China’s imported goods. The trade disputes between the two countries may be eased, and the US dollar continues to weaken, which has boosted the strength of the metal market.

III. future prospects

PMI data of various countries will be released next week. The market is expected to recover. The U.S. stock market has set a record high continuously. The U.S. dollar is low and volatile. The macro environment is still optimistic. All basic metals have got rid of the previous low range this week. Under the short market, there is still momentum to continue to rise. The spot is also the last time window for the closing of the last long single transaction of this year It will maintain a strong price trend, so it is easier for the two cities to show a strong trend in the basic metal period. The antimony ingot Market will mainly wait and see in the short term.

I. price trend

According to the price monitoring of the business agency, the domestic methanol market was sorted out in a narrow range. As of December 13, the average price of the domestic methanol market was 2120 yuan / ton. The price is 1.92% higher than that of the same period last month and 14.31% lower than that of the same period last year.

II. Market analysis

Product: the domestic methanol market continues to be weak, and the local price drops slightly. In terms of the mainland market, the overall change is not big, the demand side remains light, and some enterprises make a small profit when the shipment is weak. It is reported that under the red warning in Henan and other places, some downstream enterprises stop production and vehicle transportation is also limited, which needs continuous attention. In the port market, inventory continued to decline and the market fluctuated in a narrow range, with little change as a whole. However, after the port price was raised, arbitrage with the mainland was closed, and shipment weakened.

Freight: domestic methanol freight has been sorting out recently, with partial increase. Reference 170-240 yuan / ton for part of Inner Mongolia North line to Lubei, including 200-240 yuan / ton for Daqi to Lubei, 170-200 yuan / ton for road to Lubei, 170-220 yuan / ton for South line to Lubei, 160 yuan / ton for South line to Hebei, 150-200 yuan / ton for Guanzhong to Lubei, 200 yuan / ton for part to Lunan, 130-160 yuan / ton for Shanxi to Lubei, and The part of Lianyungang is 210 yuan / ton. The reference from Xinjiang to North Shandong is 700 yuan / ton, and from Ningxia to North Shandong is 200-210 yuan / ton.

Industry chain: formaldehyde: the domestic formaldehyde market is in a weak position. This week, affected by the heavy pollution weather, the plate factory is not in high operation and the demand is limited. After the price is lowered at the beginning of the week, the profit margin is not large due to the cost problem, and the price is kept low within the week. At present, all cities in Shandong Province have successively lifted the early warning from the previous day. However, the cost of methanol is currently weak in some parts. In this case, it is expected that formaldehyde will be slightly sorted in the later stage. Linyi 1050-1100 yuan / ton, Heze part of the manufacturers shipped 1000 yuan / ton, Zibo high-end fine chemicals 1300 yuan / ton.

Acetic acid: the domestic market of glacial acetic acid is stable. Affected by the news of SOPP device, limited transportation of local weather in the north, and negative load reduction in Lunan, the supplier’s offer was temporarily stable, and the persistent bearish mentality in the early stage improved. Due to the low sales pressure due to the long-term delivery of documents by some enterprises, the prices are relatively firm. Individual spot sales enterprises have obvious selling pressure, but considering cost, the intention of price adjustment is not high. Downstream to maintain rigid procurement, acetate, PTA, vinyl acetate and other start-up are stable.

Dimethyl ether: in the short term, the domestic market of dimethyl ether is up and down, with average market performance. At present, there is no good guidance for the news, local areas limit air mixing, upstream and downstream operations are cautious, and it is expected that the domestic market for dimethyl ether will be mainly consolidated in the short term.

III. future forecast

From the perspective of the business community: on the positive side, freight: in winter, when the haze and snowfall are concentrated, local freight rises, and the cost of arrival increases; on the raw material end, in the heating season of autumn and winter, under the protection of natural gas for civil use, the supply and demand situation still supports the market to a certain extent. On the negative side, demand: in the near future, the trading atmosphere is not good, coupled with the decline of local downstream construction, the demand side is further weakened, and local prices continue to fall; supply: some early-stage parking devices have been recovered, and local supply has increased; Arbitrage: arbitrage between the port and the mainland is basically closed, and the delivery speed is slowed down. The methanol analysts of the business club expect that the short-term domestic methanol market is flat, and some of them are still expected to decline.

I. price trend

According to the sample data monitored by the business association, as of December 10, the average price of domestic BDO market was 9780 yuan / ton, rising 2.73% month on month, down 7.74% year on year.

II. Market analysis

Products: the domestic BDO market has been reorganized and operated, the spot supply is limited, the intention of the supplier to hold up the price is continued, the offer is stable, the enthusiasm of the downstream market is low, the high price resistance is obvious, and the focus of market negotiation is temporarily stable. The supply side is still supported, the long-term shipment is stable, the spot supply is slightly tight, the factory has a strong market mentality, the offer is high, and the negotiation focus is strong. Downstream more just need to purchase, bargaining sentiment. Supply is expected to increase this week, with the industry waiting cautiously.

In terms of market, the BDO market in North China has been digested and sorted out, with the support of on-site supply, firm factory offer and strong wait-and-see mentality with small downstream orders entering the market. The focus of on-site negotiation is relatively strong. The BDO market in East China is waiting to be sorted out. The on-site operating rate is low, the spot supply is limited, and the firm price intention of the factory is high. Most of the downstream companies are not signed next year, waiting for further guidance from the news face calmly. BDO market in South China runs at a high level, with smooth factory delivery and strong market mentality. The downstream purchases are on demand. The atmosphere for negotiation of large orders in the field is relatively cold, and the price of small orders is relatively firm.

Industry chain: in terms of raw materials, methanol, Shaanxi and Mongolia announced this week that the price of methanol fell about 20% compared with the same period last week. Haze weather affected local transportation in the north, with longer cycle and strong freight. Pay attention to the bidding situation of downstream enterprises such as Lubei refining Co., Ltd. Ma continues to run in shock, with most businesses waiting. In the short term, China’s methanol market is mainly consolidation.

Calcium carbide: domestic market price of calcium carbide is mainly stable. Due to the fog and haze in North China, the transportation of calcium carbide is blocked and the trucks to be unloaded are gradually consumed. The arrival of goods in Henan is limited. Tomorrow, the purchase price is expected to be increased to attract the source of goods. Up to now, the mainstream quotation in Henan is 2850-2900 yuan / ton; the mainstream quotation in Hebei is 2880-2890 yuan / ton; the mainstream quotation in Northeast is 2970-3030 yuan / ton; the mainstream quotation in Shandong is 2880-3080 yuan / ton; the mainstream quotation in Shaanxi is 2530-2560 yuan / ton; the mainstream quotation in Shanxi is 2750 yuan / ton; the mainstream quotation in Tianjin is 2900 yuan / ton.

III. future forecast

On the whole, on the positive side, the manufacturers are willing to support the market, and some of them are under maintenance. On the negative side, downstream demand is weak. BDO analysts predict that in the short term, the domestic BDO market will be in a strong operation, with specific attention to plant restart and downstream demand.

Recently, the price of rare earth in China has continued to rise, but the market price of some rare earth products is still at a low level. The price trend chart of some rare earth products in China:

In recent years, the market price of heavy rare earth in China has continued to rise. As of December 6, the price of dysprosium oxide rose by 3.68% to 1.69 million yuan / ton; the price of dysprosium ferroalloy rose by 3.09% to 1.67 million yuan / ton; the market price of some light rare earth in China also rose. In December, the price of neodymium oxide rose by 5000 yuan / ton to 291500 yuan / ton; the price of praseodymium neodymium alloy rose by 4500 yuan / ton to 364500 yuan / ton; The price of praseodymium neodymium oxide rose by 5000 yuan / ton to 289500 yuan / ton. In recent years, the domestic price of heavy rare earth has continued to rise, and the market price of light rare earth has correspondingly risen. Affected by the favorable national policies, the domestic rare earth market has improved.

On December 5, the rare earth index was 340 points, up 2 points from yesterday, 66.00% lower than the highest point in the cycle, 1000 points (2011-12-06), and 25.46% higher than the lowest point, 271 point, on September 13, 2015. (Note: cycle refers to 2011-12-01 to now).

In recent years, the market price of Rare Earth continues to rise, the price of heavy rare earth in the rare earth market rises, the domestic supply policy of heavy rare earth market, the export of heavy rare earth has improved, and the domestic price of heavy rare earth rebounds and rises. In addition, the demand for permanent magnet has increased recently, the market trend of PR nd series products has stopped falling, the on-site supply is normal, the demand for light rare earth is general in the near future, and the market price remains low. The price fluctuation of rare earth market is related to the national environmental protection supervision. Rare earth production has particularity, especially some products have radiation hazards, which makes the environmental protection supervision more strict. Under the strict inspection of environmental protection, the manufacturer reasonably controls the sales, but the downstream demand has not changed much in the near future, and the price trend of most rare earths is mainly stable.

Recently, Geng Shuang, spokesman of the Ministry of foreign affairs, said that China is the world’s largest country in rare earth reserves and production, and plays an important role in the global rare earth industry chain. China has been adhering to the principle of openness, coordination and sharing, promoting the development of domestic rare earth industry, and is willing to meet the legitimate needs of the development of all countries in the world with rare earth resources and products, so as to promote China’s economy and the world Economic development plays an active role. China’s rare earth production accounts for 73% of the world’s total, ranking first in the world and playing an important role in the game between big countries. Rare earth PR nd and Dy TB are mainly used in NdFeB magnetic steel. Recently, the Ministry of industry and information technology and the Ministry of natural resources jointly issued a notice to release the total amount control indicators of rare earth mining and smelting separation and tungsten mining in 2019. The Ministry of industry and information technology of China announced that the total amount of rare earth mining and smelting separation in 2019 was 132000 tons and 127000 tons respectively, while the quota of rare earth mining in 2018 was 120000 tons, an increase of 12000 tons, and the data in 2019 It’s the highest year since 2014. In addition, the Ministry of industry and information technology, together with relevant departments, drafted the development plan of new energy vehicle industry (2021-2035). After 15 years of continuous efforts, China’s core technology of new energy vehicles will reach the international leading level. By 2025, the proportion of new energy vehicle sales will reach about 25%. Driven by national policies, the supply and demand pattern of rare earth industry is expected to further improve, and China’s domestic demand is expected to further improve The price of rare earth in the domestic market has increased.

Rare earth analysts of the business agency expect that the recent domestic environmental protection scrutiny will not be reduced. In addition, the domestic export of rare earth industry will be well supported, and the supply and demand pattern is improving in a good way. It is expected that the price of heavy rare earth in the rare earth market is still expected to continue to rise, and the light rare earth affected will also have a rebound.

I. price trend

According to the data monitored by the business club, today’s market comprehensive price is 14333.33 yuan / ton. There is a strong wait-and-see atmosphere in the downstream. The purchase is just needed, and the transaction atmosphere is flat.

II. Cause analysis

In terms of products: the downstream demand is limited, the rigid demand is dominated, the overall supply is not up to expectations, the delivery is slow, some spot goods are tight, and the cost of imported materials is still supported. Most businesses are cautious to wait and see the actual orders.

Industry chain: the bisphenol a market in East China has been digested and sorted out. The downstream procurement is not active, and the just need procurement is the main one. The wait-and-see atmosphere is strong. The traders are under pressure to move goods, but the price is stuck. The range reference is 9500-9600 yuan / ton.

On November 28, the PC commodity index was 59.80, flat with yesterday, down 52.56% from 126.05 (2017-12-18), the highest point in the cycle, and up 7.15% from 55.81, the lowest point on November 18, 2019. (Note: cycle refers to 2011-09-01 to now)

III. future forecast

PC analysts of business club think: the domestic PC market is weak and stable in the short term.

I. price trend

This week (11.25-29), according to the monitoring of the business agency, the domestic liquid ammonia market continued to follow the weak market of last week, and continued to decline slightly, with a decline of 0.84% and a downward detection range of 100 yuan / ton.

II. Market analysis

As far as the market is concerned this week, the liquid ammonia market is still suffering from loose supply and relatively weak demand. The ammonia inventory in most areas of China is at a medium high level. After entering November, the shipment volume has slowed down compared with the previous month, especially at the end of the month, the enthusiasm of downstream procurement is even lower. When nitrogen fertilizer and compound fertilizer enter into the winter off-season period, the market purchase quantity drops obviously.

This week, some enterprises in Shandong Province, the main production area, maintained stability, some of them fell by 50 yuan / ton, and the price in Northwest China remained stable. At present, there is a surplus of ammonia in some parts of Shandong Province. In particular, some manufacturers in Shandong Province have loose supply of goods, and the shipping pressure of enterprises is increasing, but the price of manufacturers with large ammonia is mainly stable. At the end of the week, the mainstream quotation in Shandong Province was 2750-2850 yuan / ton.

This week, the liquid ammonia in North China also fell slightly. The lack of demand led to the current ammonia volume hoarding and the price falling. The shipment pressure increased significantly. There were many downstream stoppages. At the end of the week, the main quotation in North China was 2800 yuan / ton up and down.

The increasing pressure of environmental protection in Hebei region has led to the majority of enterprises limiting production. The shutdown of large downstream enterprises such as China and Arab States has led to weak demand in the downstream. There are many enterprises accumulating inventory, and the price has not changed significantly. At the weekend, the mainstream quotation in Hebei is 2770-2850 yuan / ton.

This week, there was a slight downward trend in Central China, and the delivery pressure in Hubei was obvious. Part of Henan was affected by environmental protection pressure, and the price gave way to more profits. Currently, the liquid ammonia market is in a bad atmosphere, and weak operation, with the mainstream quotation of 2700 yuan / ton in Henan Province.

III. future forecast

In the future, the liquid ammonia data division of the Business Association believes that the market may continue to remain weak in the short term, mainly affected by the high ammonia volume in most regions and the slowdown in downstream procurement, and the market is expected to remain low next week.

In November, the price of domestic rare earth market was up and down. Influenced by domestic policies, the price of domestic heavy rare earth market kept rising, while the price of light rare earth market kept falling. According to the rare earth sector index of business association, on November 29, the rare earth index was 336 points, the same as yesterday, 66.40% lower than the highest point in the cycle, 1000 points (2011-12-06), and 23.99% higher than the lowest point, 271 point, on September 13, 2015. (Note: cycle refers to 2011-12-01 to now).

As of November 29, the average price of neodymium was 360000 yuan / ton, down 2.04% in November; the average price of dysprosium was 2075000 yuan / ton, up 2.47% in November; the average price of praseodymium was 650000 yuan / ton, down 1.52% in November. In rare earth oxides, the average price of praseodymium neodymium oxide is 284500 yuan / ton, down 2.40% in November; dysprosium oxide is 1630000 yuan / ton, up 6.19% in November; praseodymium oxide is 335000 yuan / ton, down 5.63% in November; neodymium oxide is 286500 yuan / ton, down 2.39% in November. The price of praseodymium neodymium alloy in rare earth alloy is 360000 yuan / ton, with a decrease of 2.40% in November; the average price of dysprosium ferroalloy is 1620000 yuan / ton, with an increase of 5.54% in November.

In November, the price trend of dysprosium terbium series of heavy rare earth rebounded and rose. Myanmar continued to pass customs, the supply pattern of domestic heavy rare earth market changed, and the domestic supply was normal. In addition, the domestic demand rose in recent years, and the domestic price rose. In recent years, the domestic policy was still in fermentation, which brought some good expectations for the domestic heavy rare earth market.

In November, the price of light rare earth in the rare earth market changed frequently. In November, the price of praseodymium and neodymium products decreased slightly, the price of neodymium oxide and praseodymium and neodymium oxide decreased. In addition, the downstream demand for light rare earth did not improve significantly. The downstream merchants replenished a small amount of goods on demand, and the actual transaction price was still at a low level, and there was a strong wait-and-see mood in the market. In the first ten days of November, the market price of light rare earth dropped successively, but in November The market price of light rare earth rose in the last ten days, but the increase was very limited. The price fluctuation of rare earth market is related to the national environmental protection supervision. Rare earth production has particularity, especially some products have radiation hazards, which makes the environmental protection supervision more strict. Metal enterprises and downstream magnetic material enterprises are weak in buying after the festival due to the surplus of purchasing before the festival. Under the strict inspection of environmental protection, the manufacturers control the sales reasonably, but the demand of the downstream is not changed in the near future, and most rare earth prices are stable.

Recently, Geng Shuang, spokesman of the Ministry of foreign affairs, said that China is the world’s largest country in rare earth reserves and production, and plays an important role in the global rare earth industry chain. China has been adhering to the principle of openness, coordination and sharing, promoting the development of domestic rare earth industry, and is willing to meet the legitimate needs of the development of all countries in the world with rare earth resources and products, so as to promote China’s economy and the world Economic development plays an active role. China’s rare earth production accounts for 73% of the world’s total, ranking first in the world and playing an important role in the game between big countries. Rare earth PR nd and Dy TB are mainly used in NdFeB magnetic steel. In addition, recently the Ministry of industry and information technology and the Ministry of natural resources jointly issued a notice to release the total amount control indicators of rare earth mining and smelting separation and tungsten mining in 2019. The Ministry of industry and information technology of China announced that in 2019, the total amount of rare earth mining and smelting separation was 132000 tons and 127000 tons respectively, while in 2018, the quota of rare earth mining was 120000 tons, an increase of 12000 tons, and in 2019, this The data is the highest since 2014. The supply and demand pattern of rare earth industry is expected to further improve, China’s domestic demand has improved, and the domestic market price of heavy rare earth is rising.

Rare earth analysts of the business agency expect that the recent domestic environmental protection scrutiny will not be reduced. In addition, the domestic export of rare earth industry will be well supported, and the supply and demand pattern is improving in a good way. It is expected that the price of heavy rare earth in the rare earth market is still expected to continue to rise, and the light rare earth affected will also have a rebound.

I. price trend

According to the price monitoring of the business agency, the ex factory price of octanol in Shandong Province rose slightly this week. This week, the average ex factory price of main octanol in Shandong increased from 6883.33 yuan / ton at the beginning of the week to 6950.00 yuan / ton at the end of the week, up 0.97%, down 22.78% year-on-year compared with the same period last year. Overall, octanol rose slightly this week, with the commodity index of 51.10 on November 22.

II. Market analysis

(I) products:

At present, the operating rate of domestic octanol plant is acceptable; Hualu Hengsheng’s 80000 T / a octanol plant is operating normally, and this week’s offer is firm; the annual capacity of Jiangsu Huachang Chemical octanol plant is 80000 tons, and there is no maintenance plan.

This week, the factory quotation of the mainstream octanol manufacturers in Shandong slightly increased: Hualu Hengsheng’s factory quotation of this weekend’s octanol is 6900 yuan / ton, which is temporarily stable compared with the beginning of the week; Jianlan chemical’s quotation of this weekend’s octanol is 6900 yuan / ton, which is temporarily stable compared with the beginning of the week; lihuayi’s quotation of this weekend’s octanol is 7050 yuan / ton, which is 100 yuan / ton higher than the beginning of the week.

(II) industrial chain:

Upstream raw material Market: propylene market fell slightly this week. The quotation dropped from 7296.15 yuan / ton at the beginning of the week to 7235.77 yuan / ton at the end of the week, down 0.83%, down 13.24% year on year. The price of raw materials in the upstream market fell slightly, which had a negative impact on the price of octanol due to the impact of supply and demand.

Downstream market: the price of DOP factory rose slightly this week. The DOP quotation increased from 7366.67 yuan / ton at the beginning of the week to 7383.33 yuan / ton at the end of the week, up 0.23%, down 20.32% year on year. Downstream customers have general enthusiasm for octanol procurement, general demand for octanol, and low price consolidation of DOP has a negative impact on octanol market. The aftermarket operators mostly wait and see the trend of DOP.

III. future forecast

In late November, Shandong octanol market trend or low consolidation. After the adjustment in October, the capital return of each plant is in good condition, the equipment maintenance is completed, and the production capacity is increased. The upstream propylene price fell slightly, the cost support was weak, the downstream DOP market was low and consolidated, the downstream procurement enthusiasm was general, and at present, the octanol inventory in Shandong was low, and the delivery was tight. According to the octanol analysts of the business agency, the octanol market in Shandong in late November may be in low consolidation under the influence of supply and demand and raw materials.

I. price trend

According to the data in the business club’s large list, as of November 21, the market price of propylene oxide rose, with an average price of 10033.33 yuan / ton, up 0.67% compared with that on November 20, and the mainstream price of propylene oxide in China on November 21 was 9800-10400 yuan / ton.

II. Analysis of influencing factors

Product: the market price of propylene oxide rose steadily on the 21st. The overall supply of propylene oxide market has been reduced, there is no pressure on delivery, the inventory is low, and the downstream just needs to purchase. On the 21st, the cash delivery price in Shandong mainstream market of Wanhua Chemical Co., Ltd. was 10100 yuan / ton, and that in East China mainstream market was 10400 yuan / ton. At present, the main quotation of propylene oxide Market in East China is around 9800 yuan / ton, which is delivered by cash; the main quotation of propylene oxide Market in Shandong is around 9800 yuan / ton, which is delivered by cash; the main quotation of propylene oxide Market in South China is around 9500 yuan / ton, which is delivered by cash.

Industry chain: the market in the upstream propylene Shandong region picked up slightly on the 21st, and the current market turnover is still around 7100-7450 yuan / ton, and the mainstream price is 7200 yuan / ton. At present, the crude oil market has risen significantly, and the polypropylene market has recovered. It is expected that the propylene market price may increase in recent days. On the 21st, the focus of downstream polyether market negotiation rose.

3. Future forecast:

According to the propylene oxide analyst of the business club, upstream liquid chlorine slightly pushed up, propylene price slightly rebounded, limited cost support for propylene oxide, and the price rise of propylene oxide supported by the market spot is not good, but the downstream just needs to purchase. It is expected that in the short term, the propylene oxide market will be dominated by rigid finishing and operation, and more attention should be paid to the start-up of main plant devices.