PTA: supported by crude oil, Ta unit started at a low level, Ta price continued to rise, continued to be treated more in the medium term, and dominated by normal set operation. In terms of supply, Hengli petrochemical pta-5 production line began maintenance for half a month on the 8th as planned, involving a unit capacity of 2.5 million tons / year. Yisheng Petrochemical will have 6.2 million tons of units to be inspected in the future. The overall operating rate was low in October, which is currently around 63%. Polyester is near 80% of the overall load. After the price rise, the transaction situation of TA is relatively light and the market acceptance is general, but the overall stock preparation level of polyester factory is not high. About 2 weeks. The order inquiry of terminal weaving began to increase. The market was worried that the price of raw materials would continue to rise, and the transaction situation was differentiated. Driven by the cost and supply side, the TA price is expected to remain high, with more treatment in the medium term. Hold long position，long PF short PTA.