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 downstream 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.