March 12 (Reuters) - Hengguang Co., Ltd. announced on March 11 that the 100,000-ton per year phosphorus chemical product production line, part of the 300,000-ton per year chemical project, has completed the main construction, equipment installation, and commissioning. It has now entered the trial production phase. Chempricehub analyzed phosphorus chemical products with a long-short score of -1. The production line entering the trial production phase indicates an increase in the future supply of phosphorus chemical products, which may exert downward pressure on spot prices. Although the new capacity has not yet been fully operational in its initial stage, market expectations of a looser supply have become a significant bearish factor.