the domestic ps market mainly fell, with a range of 20-100 rmb/ ton. the raw material styrene changed from rise to fall, and the prices of ordinary materials and high-end materials fell. the nstream just needs to purchase. the negotiation focus of shandong toluidine is around 9,200 rmb/ ton, with a decrease of 100-200 rmb/ ton. the transaction is average. according to statistics, the price of benzene in yuyao market is 9,550-10,600 rmb/ ton, and that of benzene in yuyao market is 11,250-12,050 rmb/ ton. the short-term ps market in china is expected to weaken in a narrow range.