PTA: PTA fluctuated sharply with crude oil last Friday. The short-term high-level volatility of crude oil caused substantial changes in the cost of PTA, which affected the valuation of PTA. From a fundamental point of view, the momentum for the 9-1 spread to continue to rise after it has strengthened to 150 has weakened. However, in the medium and long term, as the peak season for polyester consumption will gradually land, there will still be a strong market for polyester raw material PTA. The current decline is a sharp correction after the market has risen too fast.