On September 1st, the thermometer of the polyester filament market dropped sharply. The average sales-to-production ratio of sampled enterprises fell from 82.8% the previous trading day to 39.8%, a single-day decline of 43 percentage points, nearly halving. Behind this figure lies a rapid shift in downstream sentiment from panic buying to wait-and-see, signaling a new phase in the short-term price tug-of-war in the chemical fiber industry chain.
Event Background
The sales-to-production ratio is a leading indicator of real demand in the polyester filament market. A reading of 39.8% means that less than 40% of the day's output was converted into actual sales, leaving a large amount of inventory in factory warehouses. Notably, the day before, some manufacturers had recorded ratios of 300%-400% during the late trading session, sparking a buying spree.
This sharp fluctuation is not accidental. The high ratio on the previous trading day was mainly driven by manufacturers' tentative price hikes, as downstream buyers rushed to stock up fearing further increases. However, when most specifications were officially raised on September 1st, resistance quickly intensified, inquiry sentiment cooled, and transaction volumes shrank. Data from individual enterprises showed ratios ranging from 10% to 150%, with clear divergence but a notably lower overall median.
Industry Impact
The sharp drop in the sales-to-production ratio puts direct pressure on polyester filament prices. The strategy of reducing inventory via price increases faces obstacles after downstream resistance. If the ratio remains low for the next few days, manufacturers may be forced to cut prices to stimulate sales, raising the risk of a price war. For polyester plants, this means longer inventory turnover days, higher capital occupation costs, and further compression of processing margins due to fluctuations in raw material prices such as PTA and MEG.
For downstream weaving enterprises, this volatility provides a breathing window. Fabric mills that purchased at high prices earlier may face the risk of inventory depreciation, while those that have not yet stocked up gain more room to negotiate. However, it is important to note that the sales-to-production ratio is a lagging indicator; today's low figure may be just a short-term sentiment release. If crude oil or PTA costs move unexpectedly, prices could fluctuate again.
From the perspective of industry chain transmission, the loosening of polyester filament prices will gradually penetrate into grey fabric and fabric sectors. For foreign trade orders, exchange rate fluctuations combined with raw material price uncertainty make forward pricing more difficult. Some traders may choose to wait for prices to stabilize before placing orders, which could slow down the overall order pace in early September.