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.

According to the Commodity Market Analysis System of Shengyi Society, the domestic natural rubber spot market has been fluctuating and slightly rising recently (6.11~6.18). As of June 18th, the spot rubber market in China was around 13858 yuan/ton, an increase of 0.73% from 13758 yuan/ton on the 11th. There is a slight fluctuation in downstream tire production, which provides some rigid support for rubber; The raw material prices have slightly increased, and the cost of Tianjian continues to be supported. The cost and demand support have driven the recent slight increase in natural rubber prices. As of June 18th, the mainstream price for 23 years of Guangken, Baodao, and Haibao latex in Qingdao is 13800-14100 yuan/ton. However, judging from the prices of natural rubber raw materials and port inventory, there is still some pressure on the natural rubber market.
As of June 18th, the price of Thai glue was 57.50 baht/kg, an increase of 1.77% from 56.50 baht/kg on June 11th. 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 (6.11~6.18), natural rubber inventories have slightly increased, which has a bearish impact on the natural rubber market. As of June 15, 2025, the total inventory of Tianjiao bonded and general trade in Qingdao area was 606900 tons, an increase of 0.14 million tons or 0.23% compared to the previous period.
Recently (6.11~6.18), there have been slight fluctuations in downstream tire production, providing essential support for the natural rubber market. As of June 15th, the construction of semi steel tires by domestic tire companies has slightly increased to around 7.8%; The production of all steel tires by tire companies in Shandong Province has slightly decreased to around 6.10%.
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 mainly fluctuate within a certain range in the later stage.

According to the monitoring of the commodity market analysis system of Shengyi Society, the average price of LLDPE (7042) was 7346 yuan/ton on June 9th and 7471 yuan/ton on June 17th, an increase of 1.70%. LDPE (2426H) had an average price of 9216 yuan/ton on June 9th and 9683 yuan/ton on June 17th, an increase of 5.06%. HDPE (2426H) had an average price of 8037 yuan/ton on June 9th and 8075 yuan/ton on June 17th, an increase of 0.47%.
The recent trend of polyethylene market is relatively strong, with a relatively large increase in high-pressure prices. Affected by the tense situation in the Middle East, international oil prices have risen, and the cost side is favorable for the rise in the polyethylene market. Petrochemical companies and traders have adjusted their prices accordingly. Especially for high-pressure products, the dependence on imports is high, and the market is concerned that the supply may be insufficient; At the same time, there are many high-pressure product equipment shutdowns for maintenance, including Yanshan Petrochemical, Wanhua Chemical, and Zhejiang Petrochemical. The demand for agricultural film is in the off-season, with few orders from enterprises, poor demand, and limited transactions; The operating rate of packaging film enterprises is expected to decrease, and demand is weak, which limits the price increase space on the demand side.
Due to the expected decrease in costs and supply side, but the demand side is in the off-season, and it is expected that the trend of polyethylene will be mainly strong, with limited upward space.