玻璃主力合约失守1200元/吨，日内跌幅6.41%。纯碱主力合约日内大跌4.00%，现报1312.00元/吨。

Group 1 - The main contract for glass has fallen below 1200 yuan/ton, with an intraday decline of 6.41% [1] - The main contract for soda ash has experienced a significant drop of 4.00%, currently reported at 1312 yuan/ton [1]