On January 12, the PVC market in Zibo experienced a significant price increase. The futures market rose during the midday session, driving up spot market prices. Today, distributors' quotations increased by 30-50 yuan or more compared to yesterday, with market sentiment heating up and actual transactions remaining favorable. Currently, the mainstream delivery price for calcium carbide-based PVC type 5 is in the range of 4,580-4,630 yuan/ton.