PS: This week, the domestic PS market first fell and then rose, with the overall center of gravity moving down, contrary to the trend of raw materials. The raw material styrene fell first and then rose, and the price of PS continued to fall last Friday. On Tuesday, styrene rebounded due to the shortage of paper goods, but the ex-factory price of PS was lowered, the price of PS was mixed, and some goods were tight and actively supported the price. However, the enthusiasm for terminal purchases is general, the improvement in market shipments is not strong, and the market has limited room for rebounding. Changed benzene continued to be affected by the fall in ABS prices. According to information data, on July 28, 2022, the price of benzene in the East China market fell, and the price of benzene fell.