The trading data for polyester filament on September 4 sounded an alarm for the industry: the average sales-to-production ratio among sample enterprises stood at only 21.0%, down 4.8 percentage points from the previous trading day's close. Behind this figure lies persistent downstream resistance to high raw material prices and a market where buying has shrunk to rigid demand. When the sales-to-production ratio falls below 30%, it means that inventory pressure at upstream polyester plants is quietly building, and the cost of this price game is transmitting layer by layer along the supply chain.
Event Background
Daily fluctuations in the sales-to-production ratio are normal, but the combination of an absolute value of 21% and a 4.8 percentage point drop sends a signal far beyond a mere 'healthy correction.' Public data from sample enterprises show ratios ranging from 0% to 40%, with clear divergence—some enterprises recorded almost no transactions, while a few maintained shipments at 40% of production. This divergence reveals not a wholesale disappearance of demand, but selective transactions in a high-price market: only those enterprises with more flexible pricing or stronger customer loyalty can unlock limited orders amid the stalemate.
Notably, this is a continuation of several days of low ratios. Combined with recent trends in the chemical fiber market, polyester filament prices are oscillating between cost support and weak demand, and upstream-downstream negotiations have entered a white-hot phase. Downstream weaving enterprises, facing high raw material prices, are increasingly cautious in their procurement strategies, generally adopting a 'buy only what you need' approach to avoid building inventory amid the risk of price corrections.
Industrial Impact
The direct consequence of low sales-to-production ratios is the passive accumulation of inventory at polyester plants. If this persists for several weeks, plants will face dual pressure from capital tied up in inventory and warehousing costs, potentially forcing them to cut prices to alleviate cash flow strain, which could trigger a loosening of the price system. For downstream buyers, the current 'wait-and-see' strategy is essentially a patient bet against upstream—betting on when upstream inventory pressure will translate into price concessions.
From the cost side, firm raw material prices remain a key support preventing polyester filament prices from falling sharply. However, when demand elasticity is insufficient to absorb high prices, the cost transmission mechanism is hindered, squeezing profit margins across the chain. This squeeze hits small and medium-sized polyester plants hardest; lacking scale advantages and bargaining power, they are often the first to suffer during periods of low sales-to-production ratios, and may be forced to reduce output or halt for maintenance to rebalance supply and demand.
For downstream weaving and garment enterprises, high raw material prices mean elevated production costs, further compressing profit margins on end-order goods. This is especially true for foreign trade-oriented textile companies, which already face uncertainties such as exchange rates and shipping costs in international markets; every fluctuation in raw material prices directly impacts their pricing competitiveness. The current market stalemate is effectively forcing the entire industry chain to rethink pricing mechanisms and inventory management models.