The polyester filament market has received a key signal: leading producer Rongsheng Petrochemical (including Shengyuan) uniformly cut its FDY quotes by 50-100 CNY/ton across specifications on August 6. Semi-dull FDY 150D/96F is now quoted at 8500 CNY/ton, while 300D/96F stands at 8600 CNY/ton and black yarn 150D/48F at 9150 CNY/ton. This is not merely a price fluctuation but a clear expression of the supply-demand relationship in the polyester industry chain.
Event Background
The adjustment covers semi-dull and black yarn series, involving common FDY specifications from 30D to 300D. Although the reduction is only in the range of 50-100 CNY/ton, the fact that it was initiated by the industry leader gives it symbolic significance far beyond its actual magnitude. In the chemical fiber industry, price quotes from leading enterprises are usually regarded as market benchmarks, and other manufacturers often follow suit within days, creating a new price anchor.
From a timing perspective, August is a transitional period between the traditional off-season and peak season, when downstream weavers tend to be cautious about stockpiling. This reduction may reflect that destocking pressure is being transmitted to the raw material end. Industry public data shows that polyester factory inventory days have recently risen, while terminal orders have not shown significant growth, leaving supply-demand negotiations in a stalemate.
Notably, black yarn series quotes remain significantly higher than their semi-dull counterparts. For instance, black yarn 150D/48F is quoted at 9150 CNY/ton, which is 650 CNY/ton higher than semi-dull 150D/96F. This price gap indicates that differentiated products still retain a premium, but the overall price center has clearly shifted downward.
Industry Impact
For buyers, this price cut means that short-term procurement costs are expected to decline, but they should be wary of the "buy on rising, not falling" mentality that may lead to delayed orders. In fact, current prices are already close to the cost line of some small and medium-sized factories, leaving limited room for further sharp declines. For grey fabric and finished fabric enterprises, lower raw material costs may lead to softer quotations, thereby affecting the competitiveness of export orders.
From the perspective of industry chain transmission, the weakening of FDY prices often accompanies declines in POY and DTY, as they share raw material costs and downstream demand. If downstream weaving operating rates remain low, polyester filament prices may enter a gradual decline channel; conversely, if orders for the "Golden September and Silver October" are released early, the current low point could become a temporary bottom.
For Rongsheng Petrochemical itself, proactively lowering quotes is both a response to the market and a strategy to force the exit of small and inefficient capacity. In the context of increasing industry concentration, leading enterprises use price tools to consolidate market share, which is beneficial for long-term supply-demand rebalancing. However, in the short term, the spot market trading center is moving down, and holders face inventory devaluation risks and need to accelerate turnover.