TA: Crude oil prices fell from a high level, and TA followed a decline. Long05 short 01, 1ong PF short TA. The basis margin stays at -80 to -90 yuan/ton yesterday, the monthly margin weakened slightly, the production and sales of polyester were weak, and finished polyester products were still in stock. During the week, the operating rate of TA units dropped slightly to 81%; while the polyester factory started to recover slowly, due to limited electricity and poor profits, the polyester factory is expected to start at a low level next week, and TA continues to accumulate the pattern. TA valuation is low, but under the expectation of the accumulated library, long 05 short 01. The previous long TA short EG arbitrage position was closed.