On May 25, at the beginning of the week, PVC market prices in the Zibo area edged up slightly. The futures market turned positive, and spot prices followed the market trend. Today, dealers' offers increased by 50 yuan/ton compared with the previous trading day. Market sentiment improved slightly, but actual transactions were average. Currently, the main ex-works price for calcium carbide method Type 5 is in the range of 4,750-4,800 yuan/ton.