南大光电：子公司南大光电（乌兰察布）有限公司目前主要从事三氟化氮的生产、销售，六氟化钨项目已终止实施

Core Viewpoint - The company has terminated the implementation of the hexafluorotungsten project, which was initially planned with a total investment of 150 million yuan and a production capacity of 500 tons per year [1] Group 1: Project Status - The hexafluorotungsten project has been under construction for over two years but has not progressed, as the company has stated it is not engaged in the production or sales of hexafluorotungsten [1] - The company currently focuses on the production and sales of trifluorine nitrogen instead [1]