According to the monitoring of the commodity market analysis system of Shengyi Society, the average price of LLDPE (7042) was 7453 yuan/ton on August 1st and 7441 yuan/ton on August 11th, a decrease of 0.16%. LDPE (2426H) had an average price of 9516 yuan/ton on August 1st and 9533 yuan/ton on August 11th, an increase of 0.18%. HDPE (2426H) had an average price of 7975 yuan/ton on August 1st and 7987 yuan/ton on August 11th, an increase of 0.16%.
Since August, polyethylene has fluctuated with narrow range operations. The favorable domestic policies provide certain support for the polyethylene market. The pre maintenance equipment on the supply side has been restarted one after another, and there are expectations of an increase on the supply side. On the demand side, in early August, the downstream is in a low season of demand with limited new orders. The market is cautious and lacks support. In late August, the downstream will prepare in advance for the peak season, and there is a positive expectation on the demand side. Due to market concerns that the new round of US tariffs will drag down the global economy, oil prices fell sharply last week, suppressing the polyethylene market.
Loose supply, positive expectations on the demand side, and policy support are expected to lead to narrow range fluctuations in polyethylene.

According to the Commodity Market Analysis System of Shengyi Society, from August 4th to 8th, the domestic aggregated MDI market saw a slight increase, with an average price of 15650 yuan/ton at the beginning of the week and 15800 yuan/ton at the end of the week. The increase during the period was 0.96%, and the year-on-year decrease was 9.37%. During the week, the factory started operating steadily, and news of price increases was released. Intermediary quotes remained stable and pushed up, while downstream transactions were small and single occupancy was high. Under the supply-demand game, the market saw a slight increase.
On the supply side, the maintenance of the 80000 ton/year MDI plant in Dongcao Rui’an will begin on July 23rd and is expected to last for about 35 days.
In terms of cost, the recent fluctuations in raw materials such as pure benzene and aniline have limited impact on the polymerization of MDI.
On the demand side, downstream demand is average, the trading atmosphere is quiet, and transactions are mainly small orders.
In the future forecast, the current aggregated MDI market is supported by the willingness of suppliers to raise prices, and prices are tentatively pushed up. In the short term, there is little change in the supply and demand side, and it is expected that the resistance to the continued rise of the aggregated MDI market in the short term will increase, and the market will continue to consolidate and operate.

According to the Commodity Market Analysis System of Shengyi Society, the mixed xylene market has slightly increased this week, rising from 6010 yuan/ton to 6070 yuan/ton from July 28 to August 4, 2025, an increase of 1%. The domestic mixed xylene market overall closed higher this cycle, with petrochemical plant maintenance in Shandong region. The supply in the region is tight, and refineries have generally raised their ex factory prices. The port inventory in East and South China is relatively low, and downstream market enthusiasm is still acceptable, resulting in a slight increase in market prices.
Cost wise: As of August 1st, international crude oil futures closed down, with the settlement price of the September WTI crude oil futures contract in the United States at $67.33 per barrel. The settlement price of Brent crude oil futures for October contract is $69.67 per barrel. The market is concerned that OPEC may increase oil production, coupled with US employment data dragging down the demand outlook.
Supply side:
Sinopec’s xylene quotation summary shows that the company is currently operating normally, with stable production and sales. The company’s quotation remains unchanged from the previous day. As of August 4th, East China Company quoted 6150 yuan/ton, North China Company quoted 5750-5950 yuan/ton, South China Company quoted 6150-6200 yuan/ton, and Central China Company quoted 5800-6050 yuan/ton.
Demand side:
On August 4th, Sinopec Sales Company temporarily stabilized the price of xylene, with the current execution price of 7000 yuan/ton. This price is implemented in East China, North China, Central China, and South China. Yangzi Petrochemical, Zhenhai Petrochemical and other units are operating stably and sales are normal. The price has been reduced by 250 yuan/ton compared to July 28th. As of August 1st, the closing prices of the xylene market in Asia were $834-836/ton FOB Korea and $859-861/ton CFR China, a decrease of $13/ton from July 25th.
Market forecast: In terms of supply, the recent arrival situation in Hong Kong is not good, and the market supply is tight, which will provide a certain boost to the market in the short term. From the demand side, the downstream chemical and oil blending industries are performing well, and there are some purchasing intentions in the oil blending industry. Supported by favorable supply side conditions, it is expected that the market will rebound slightly in the short term, but the overall upward space is limited.

The overall focus of the domestic acetone market declined in July, with a slight increase at the end of the month. The acetone market in East China reported an average daily price of 5000 yuan/ton from July 1st to 4850 yuan/ton on July 30th, a decrease of 3%. From the perspective of the national acetone market, there are fluctuations of the same magnitude.
In the first half of the month, raw material products fluctuated, and the driving force from the cost side weakened. Phenol ketone factories continued to be in a loss making state, with significant shipping pressure. At the beginning of the month, the acetone market rapidly fell, with a low of 4600 yuan/ton in the East China region. Petrochemical companies followed the market fluctuations and overall lowered their listing prices.
In the middle of the month, with the normal operation of the Yangzhou Shiyou plant, the industry operating rate of the phenol ketone factory exceeded 80%, and the market supply was sufficient. The pressure on traders increased, but the market was close to a low level and the downward space was limited. With downstream inquiries on dips, factories urgently need to follow up on purchases, and market trading volume has increased. In the latter half of the month, Hengli Petrochemical’s phenol ketone unit was shut down for maintenance, causing the industry’s operating rate to decline by 5%. Although supply is still sufficient, due to limited replenishment at the port, inventory has fallen to 20000 tons. Traders intend to boost the market and offer tentative increases, with a daily increase of 20-30 yuan/ton in the last week of the month.
The acetone offers in major mainstream markets across the country on July 31st are as follows:
Region. Quotation on July 31st /Price fluctuations in July
East China region./4800-4850./-200
Shandong region / 5000./ -350
Yanshan region / 4900./ -400
South China region / 4950./ -100
In July, the 320000 tons/year phenol ketone plant at Yangzhou Shiyou was shut down for maintenance from June 13th to July 10th; Hengli Petrochemical will shut down for maintenance from July 21st to 27th; Guangxi Huayi will stop for maintenance from July 25th to 27th; The Shanghai Xisa plant stopped briefly on July 28th for a 3-day maintenance.
It is expected that the market may experience a slight increase in August. From the supply side, the Zhenhai Refining and Chemical Phenol Ketone Plant has been shipped normally, and the domestic supply of acetone has increased. From the perspective of imports, Saudi Arabia’s facilities have been shut down for maintenance, Middle Eastern sources are limited, and Thailand’s facilities have maintenance plans. Currently, the import volume has slightly decreased. From the perspective of demand, downstream bisphenol A and isopropanol units have seen some improvement, while MIBK has not fluctuated significantly. However, overall procurement is still mainly based on demand, but with the passing of high temperature weather, the overall demand for solvent products will improve. From a cost perspective, the external environment remains weak, and pure benzene is also an important factor in the later fluctuations of acetone. At present, the acetone market is at a low level, and it is expected that the acetone market will remain stable or have a narrow upward trend in August.

According to the monitoring of the commodity market analysis system of Shengyi Society, the magnesium ingot market in Shaanxi Province has fallen and fluctuated overall, with an average market price of 17250 yuan/ton at the end of the month and 16175 yuan/ton at the beginning of the month, a monthly increase of 6.65%.
This month’s market analysis
Starting from July, magnesium prices have remained stable and rebounded, with a stalemate game and a slight decline in prices. The mid month magnesium market showed a trend of first decreasing and then stabilizing, with significantly increased resistance to price decline and a return to stability. At the end of the month, the magnesium market showed strong upward momentum, with prices starting a moderate upward trend and continuing to climb. As the end of the month approaches, magnesium prices remain stable at a high level.
Supply and demand side
On the supply side, due to the advantage of small spot inventory, factories continue to maintain a willingness to raise prices, and low-priced goods are extremely scarce in the market. Affected by extreme high temperatures, magnesium smelting enterprises are facing numerous difficulties in resuming work and production, while production costs have also increased to a certain extent. Holders of low-priced goods in the market are generally reluctant to sell, and this strong sentiment has led to a rapid shift in market supply and demand from the previous loose situation to a tight state, further enhancing the driving force for price increases and driving prices to continue rising.
On the demand side, although downstream demand shows some signs of improvement, a cautious procurement pace is still maintained, and downstream customers and intermediaries mainly carry out small-scale replenishment operations based on rigid demand. Enterprises in the mid month application field have shown a high acceptance of current prices, however, some trading enterprises have a strong willingness to lower prices due to accepting orders at lower prices in the early stage. With the concentrated release of demand for magnesium in industries such as new energy vehicles and two wheeled electric vehicle components, the market demand scale is rapidly expanding. In addition, influenced by the prevalent consumer psychology of “buying up, not buying down” in the market, the purchasing enthusiasm of application end enterprises and traders has been fully ignited, thus forming a strong upward force on magnesium prices from the demand side, injecting momentum into the rise of magnesium prices.
In terms of raw materials
Coal, ferrosilicon, and other essential raw materials for magnesium smelting have seen their prices continue to rise, creating a stable bottom line for magnesium prices and becoming important supporting factors for their upward trend.
Future forecast
The current market supply and demand sides are in a stalemate, and given the recent high magnesium prices, low-priced sources are extremely scarce in the market. The downstream buyers have a cautious mentality, and although there have been inquiries, the actual transaction volume is at a relatively low level. Due to multiple factors such as the recent rise in raw material prices, supply side contraction, and reduced spot supply, there is limited room for concessions in actual order negotiations. Overall, magnesium prices are unlikely to rise or fall in the short term, and are expected to remain stable.