According to the Commodity Market Analysis System of Shengyi Society, the domestic natural rubber spot market has been fluctuating and declining recently (6.18-6.25). As of June 25th, the spot rubber market price in China’s natural rubber market was around 13628 yuan/ton, a decrease of 1.66% from 13858 yuan/ton on the 18th. Downstream semi steel tire production has slightly decreased, providing some rigid support for rubber; The slight decline in raw material prices, coupled with the continued increase in port inventories, still puts some pressure on the natural rubber market. As of June 25th, the mainstream price for 23 years of Guangken, Baodao, and Haibao latex in Qingdao area is 13600~13850 yuan/ton.
As of June 25th, the price of Thai glue was 57.50 baht/kg, unchanged from 57.50 baht/kg on June 18th. At present, the Yunnan production area in China has entered the cutting stage. Although Thailand and Hainan have recently experienced increased precipitation and high prices, the expected increase in global supply in the later stage is not reduced, and the price of natural rubber raw materials is expected to continue to decline in the later stage.
Recently (6.18-6.25), natural rubber inventories have slightly increased, which has a bearish impact on the natural rubber market. As of June 22, 2025, the total inventory of Tianjiao bonded and general trade in Qingdao area was 617300 tons, an increase of 10300 tons or 1.70% compared to the previous period.
Recently (6.18-6.25), there has been a slight fluctuation in downstream tire production, providing essential support for the natural rubber market. As of June 22, the production of semi steel tires by domestic tire companies has slightly decreased to around 7.3%; Around 6.10% of tire companies in Shandong have started construction on all steel tires.
Market forecast: As domestic and international raw material prices stabilize at high levels and expectations continue to decline in the later stage, downstream production fluctuates slightly, providing support for natural rubber demand, and Tianjin Rubber Port inventory remains high; Overall, it is expected that the natural rubber market will experience weak fluctuations in the later period.

price trend
According to the bulk ranking data of Shengyi Society, the domestic PC market has been stable with small fluctuations recently, and some spot prices of certain brands have been adjusted narrowly. As of June 24th, the mixed benchmark price of Business Society PC is around 14493.33 yuan/ton, with a price increase or decrease of -0.80% compared to early June.
cause analysis
On the supply side: As the end of June approaches, the load of domestic PC aggregation enterprises has fallen slightly. In the early months, the average operating level of the industry in the middle of the month was pushed up to 85%. Recently, there has been a technical upgrade task for the Cangzhou plant, and the operating rate of enterprises has been lowered, resulting in an industry operating rate of around 79%. The weekly average production has been narrowly reduced to 64000 tons, with limited production losses. At the same time, there is a lack of arrangements for future market load reduction, and PC inventory has remained high for a long time, resulting in abundant on-site supply. Manufacturers and midstream inventory levels remain high, with no reduction in shipping pressure, and there has been no improvement in the market supply side’s support for PC prices.
In terms of raw materials, it can be seen from the above chart that bisphenol A remained stable with a slight increase in late June. Recently, the upstream crude oil market in the far end has fluctuated sharply after rising, and the market has poor transmission effect on the direct raw materials acetone and phenol for PC. Meanwhile, there has been little change in demand for bisphenol A, and the market lacks further upward momentum. Overall, the price increase of bisphenol A in this round of market is likely to be limited, and its support for PC costs is average.
On the demand side: With the gradual warming of the domestic climate, the downstream factories of PC are experiencing a decrease in load, and stocking is mainly due to weak demand, gradually entering the traditional off-season for consumption, further dragging down the PC consumer end. Due to the long-term weak market dynamics in the industry, high social inventory, and abundant on-site supply, the supply-demand contradiction did not improve at the end of June. Currently, terminal enterprises are cautious in purchasing new orders, and their trading performance continues to be dominated by contract delivery. Merchants tend to have a wait-and-see attitude, buyers are resistant to high priced goods, and the flow of goods in the market is slow. Overall, the demand side has weak support for PC spot prices.
Future forecast
At the end of June, the domestic PC market was consolidating and operating. The upstream bisphenol A market has risen, but the increase is relatively small, which has limited support for the cost value of PC. The load of domestic PC aggregation plants has narrowly declined, while the pattern of strong supply remains unchanged. Downstream demand is at a low season level, and businesses are adopting a wait-and-see attitude towards the future market. On the one hand, industry inventory remains high, and on the other hand, PC prices are low, with limited room for decline. Currently, the market is experiencing fluctuating positive news, and there is insufficient vitality in supply and demand. It is expected that the PC market will continue to focus on consolidation in the future.

Last week (June 16-22, 2025), upstream raw materials continued to rise in price, with strong support on the cost side. Downstream enterprises had a certain degree of risk aversion and held onto rigid demand purchases in multiple dimensions. Under the game of positive and negative factors, the price of nylon filament increased narrowly, with limited actual transactions.
Nylon filament prices rise narrowly
According to the Commodity Market Analysis System of Shengyi Society, the price of nylon filament increased narrowly last week (June 16-22, 2025). As of June 22, 2025, DTY (premium product) of nylon filament in Jiangsu region; 70D/24F) quoted 14700 yuan/ton, an increase of 100 yuan/ton compared to last week, with a weekly increase of 0.68%; Nylon POY (premium product; 86D/24F) quoted 12350 yuan/ton, an increase of 200 yuan/ton compared to last week, with a weekly increase of 1.65%; The price of nylon FDY (premium product: 40D/12F) is reported at 15325 yuan/ton, an increase of 100 yuan/ton from last week, with a weekly increase of 0.66%.
The raw material market continues to rise in price
In terms of cost: Last week (June 16-22, 2025), the spot market price of caprolactam was relatively strong, and the weekly settlement price of Sinopec’s high-end caprolactam was raised to 9650 yuan/ton, an increase of 425 yuan/ton from the previous period. The market trend of nylon PA6 chips is gradually stabilizing, with strong cost support. As of June 22, 2025, the benchmark price of caprolactam in Shengyi Society was 9550 yuan/ton, and the price continued to rise, with a weekly increase of 2.41%. During the week, the market price of high-speed spun nylon PA6 slices slightly increased, with a 2.19% weekly increase in nylon PA6 prices, mainly due to strong cost support.
Supply and demand: During the week, some nylon filament manufacturers have lowered their operating rates, resulting in a decline in overall market supply. However, industry inventory levels continue to increase, leading to poor performance on the supply side; The demand in the end market is weak, and some downstream manufacturers have reduced production or switched production, resulting in a decrease in demand for nylon filament. It is difficult to find favorable support from the demand side, and many parties are following suit with rigid demand. Many industry players are adopting a cautious and wait-and-see attitude.
Future forecast
Cost aspect: Caprolactam is operating strongly, and prices will rise. In terms of nylon PA6 chips, due to strong cost support, the supply level of PA6 chips in the market may continue to improve. Downstream market demand is weak, and it is expected that the market price of nylon PA6 chips will rise slightly.
Supply and demand: June is a transitional period from the market to the traditional off-season, coupled with the lack of signs of improvement in terminal market demand and low purchasing enthusiasm in downstream markets. Therefore, it is expected that the demand for nylon filament market may decrease next month. If there is no significant improvement in demand, under the pressure of large inventory, some nylon filament manufacturers may have the possibility of reducing production capacity, while the industry continues to release new production capacity. Therefore, it is expected that the supply of nylon filament market will decrease next month.
Overall, the upstream raw material caprolactam spot market and nylon PA6 chip market will operate strongly, with strong cost support. The downstream market demand is difficult to improve, and the demand side will drag down the market trend. Business analysts predict that the nylon filament market will fluctuate and consolidate in the short term, with stable prices as the main factor.

The Zhenhai Refining and Chemical Plant was successfully put into operation within the week, with increased supply. Supported by the increase in raw material costs, the spot market price of acrylonitrile remained stable. As of June 20th, the mainstream negotiation for container self pickup at East China ports remains at 8100-8200 yuan/ton, a decrease of 50 yuan/ton from last week; Short distance delivery to the Shandong market remains at around 8050-8150 yuan/ton, up 50 yuan/ton from last week’s low-end price.
This week, the market is paying attention to the progress of new equipment, with a negative attitude. However, there is no pressure on inventory in the short term (as of June 18th, the inventory of domestic acrylonitrile factories was 43600 tons, an increase of 0.08 million tons from last week), and market negotiations are being maintained under cost support. At present, the supply and demand fundamentals are maintaining a weak balance, and overall sales of manufacturers are still acceptable with no inventory pressure, resulting in overall price stability. On the one hand, market attention is focused on the production and supply growth of the new Zhenhai Refining and Chemical Plant, resulting in low buying enthusiasm. On the other hand, the sharp rise in crude oil prices has triggered market expectations of an increase in acrylonitrile costs, leading to a decrease in low price negotiations on the market. The market is mainly wait-and-see, and operations are cautious under bearish sentiment, resulting in an overall trading stalemate.
The capacity utilization rate of the main downstream industries of acrylonitrile varies, and the production of acrylic fiber industry continues to increase, with the overall load reaching over 60%; The ABS industry has maintained a production rate of around 60%. As of June 19th, the ABS capacity utilization rate was 63.97%, a decrease of 0.05% compared to the same period last week. Raw materials are purchased on demand, and the overall demand performance is average.
The international oil price continues to rise, coupled with the current supply and demand support, the willingness of enterprises to raise prices is prominent, and the propylene market price continued to be strong during the week. As of June 19th, the price of propylene in Shandong region is between 6460-6510 yuan/ton, an increase of 50 yuan/ton compared to last week.
Overall, there is no pressure on factory inventory in the short term, and the overall quotation is maintained with the support of rising raw material costs. However, the Zhenhai Refining and Chemical Plant has been successfully put into operation, with an increase in supply and a lack of significant growth space in demand. The supply-demand contradiction and cost pressure may result in supply variables in the future. Market bearish sentiment still exists, and there is an expectation of a decline in acrylonitrile prices, but the space is still limited.

According to the Commodity Market Analysis System of Shengyi Society, the TDI market first fell and then stabilized in June. On June 19th, the average market price in East China was 11433 yuan/ton, and on June 1st, the average price was 12266 yuan/ton, a decrease of 6.79% during the week and a year-on-year decrease of 21.33%.
In early June, the TDI market was greatly affected by supply and demand. At the beginning of the month, large factories maintained their original levels of equipment, and the supply side remained stable. The supplier has a strong willingness to raise prices, and intermediaries have accelerated their delivery speed, resulting in a slight decrease in prices. On the 5th, Wanhua Fujian’s equipment was undergoing maintenance, with downstream demand being the main concern and high-level cargo sources experiencing poor flow. Under the game of supply and demand, the TDI market has made a slight adjustment. Subsequently, Shanghai’s major factories restarted their facilities, and the market supply was relatively fast and abundant. Due to strong supply and weak demand, downstream companies entered the market at a low price, and in order to stimulate sales, TDI accelerated its decline.
Supply side: Gansu Yinguang is operating at medium to high loads, while Shanghai BASF is restarting. The 300000 ton/year TDI plant in Fujian underwent maintenance on June 5th, lasting for 45 days.
According to the analysis of the future market, the TDI data analyst from Shengyi Society believes that the current TDI price has fallen to a low level, and the supply side is supporting the price, but the demand is unlikely to change significantly. It is expected that the TDI market will consolidate and operate in the short term.