A two-day rebound in crude oil futures has reignited restocking enthusiasm downstream of the polyester chain. Industry data on July 8 showed that the average sales-to-production ratio of sampled polyester filament yarn (PFY) enterprises surged to 103.6%, a sharp increase of 60.7 percentage points from the previous day's close. This figure stands out after weeks of subdued market activity—but the key question is whether it signals a genuine recovery or merely a shift in inventory.
Cost-Driven Pulse Restocking
Looking at the data structure, individual enterprise ratios showed extreme divergence, ranging from a high of 300% to a low of 10%. This 'ice and fire' pattern indicates that the volume surge was not driven by broad-based end-demand improvement, but rather by downstream fabric mills rushing to lock in low-cost raw materials amid expectations of further crude oil gains. Feedstock prices for PTA and MEG strengthened in tandem on the cost side, providing support for PFY price hikes. Some traders and weaving mills chose to replenish inventories centrally at this point to secure relatively low costs.
Notably, a 103.6% sales-to-production ratio means overall shipments slightly exceeded current output, leading to a marginal drawdown in inventories. However, considering the prolonged period of low sales (typically 40%-60%) in previous days, current inventory levels remain at historically mid-to-high levels. Feedback from some weaving mills in Jiangsu and Zhejiang provinces indicates no significant increase in grey fabric orders, implying that the replenished PFY will likely remain as raw material inventory in factory warehouses for the short term.
Where Is the Bottleneck in Upstream-Downstream Transmission?
This round of PFY sales expansion is essentially a cost-side sentiment transmission downstream. Crude oil, as the source of the polyester chain, transmits its price volatility through the PX-PTA-polyester chip-PFY chain. The rebound in international oil prices in early July, driven by geopolitical factors and OPEC+ production cut expectations, directly stimulated strength in polyester feedstock futures, which in turn boosted spot market buying interest.
However, the real bottleneck in the chain lies not in raw materials but in downstream weaving. Operating rates in major weaving clusters such as Shengze, Changxing, and Xiaoshan remain at a low 65%-70%, down about 8-10 percentage points year-on-year. Garment export orders have not yet seen a large-scale recovery due to overseas destocking cycles, while the domestic market is constrained by consumption downgrade trends, with both home textiles and apparel fabrics moving slowly. Downstream weaving mills' PFY purchases are more of a 'passive restocking' move—driven by fear of missing low prices rather than by active production expansion.
Assessment of Sustainability
Historical experience suggests that sales surges driven solely by cost-side factors typically last 3-5 trading days before reverting to fundamentals. Currently, cash flow margins for the three main PFY varieties—POY, FDY, and DTY—are hovering near breakeven levels. If crude oil fails to establish a trend upward, polyester plants' willingness to support prices will be restrained. Once feedstock price momentum slows, downstream buying enthusiasm will cool rapidly, and the sales-to-production ratio will likely fall back to the normal range of 60%-80%.
For upstream polyester plants, the 103.6% ratio provides a temporary pressure relief window but not a reversal signal. Companies should use this window to accelerate destocking rather than blindly increase output. For downstream weavers and traders, this restocking opportunity should be managed with caution to avoid tying up capital in high-priced raw materials before demand materializes.