摘要
The Hebei Xinji Barium Salt Group Co. Ltd is the largest barium salt production and export base in the world. Major products include Five Continents brand industrial barium carbonate, high purity barium carbonate, precipitated barium sulphate, barium nitrate, industrial sodium sulphide, industrial sulfur, sodium thiosulfate and sodium hydrosulphide. The annual output of barium salt is 120,000 tons, 2/3 for export. In 1995, the export value was US$20 million. As early as in 1953, its sodium sulphide began to be exported and re-
