December 30th News On December 30th, Yantai Wanhua held a maleic anhydride auction: - Yantai session: auction volume 90 tons, 60 tons sold at 4,250 yuan/ton. - East China session: auction volume 150 tons, all 150 tons sold at 4,700 yuan/ton. Chempricehub's analysis of maleic anhydride, with a bullish-bearish score of 1: The article indicates that maleic anhydride was sold at 4,700 yuan/ton in the East China market, with all 150 tons traded, reflecting strong demand and supporting spot prices. In the Yantai market, the transaction price was 4,250 yuan/ton, with only 60 tons sold, indicating relatively weaker demand. However, overall market sentiment remains positive, and spot prices are expected to rise slightly.