On January 28, Shandong Lutai's PVC plant operated at reduced capacity, with an operating rate below approximately 40%. The quoted prices are as follows: calcium carbide-based SG-5 ex-factory price is 4,650 yuan/ton, while SG-8 type is temporarily not quoted. The manufacturer's PVC production capacity is 370,000 tons. PriceSeek analysis of PVC: Bullish-Bearish Score: +1.5. Shandong Lutai's PVC plant operating at reduced capacity, with an operating rate below 40%, has led to a significant reduction in output. With the manufacturer's production capacity at 370,000 tons, supply has contracted notably. The ex-factory price for SG-5 is 4,650 yuan/ton, and SG-8 type is temporarily not quoted, indicating a tight supply situation. The tightening supply-demand relationship is expected to drive up the spot price of PVC, creating a positive impact. The score of +1.5 reflects a relatively strong positive effect of reduced supply on prices, though it is not an industry-wide event, thus representing a moderately bullish factor.