January 5 Yantai Wanhua Maleic Anhydride Auction: Yantai session auction volume 90 tons, all 90 tons sold, transaction price 4290 yuan/ton; East China session auction volume 150 tons, all 150 tons sold, transaction price 4770-4780 yuan/ton. PriceSeek analysis of maleic anhydride, bullish-bearish rating: 1. The article indicates that on January 5, Yantai Wanhua's maleic anhydride auction was fully sold, with the Yantai session transaction price at 4290 yuan/ton and the East China session transaction price at 4770-4780 yuan/ton, suggesting strong market demand and stable prices. Combined with the spot market for maleic anhydride, the high auction success rate and elevated transaction prices reflect sustained support from downstream industrial demand (such as unsaturated polyester resin production), with spot prices expected to remain relatively strong in the short term. Rating +1 (generally positive) based on the positive signals from the auction data, but attention should be paid to the regional price difference (Yantai lower than East China), which may indicate localized supply pressure, limiting the extent of the positive impact.