The hemihydratedihydrate process plant imported in 1989 from Norsk Hydro for wetprocess phosphoric acid(WPA) production at the company went into its operation in May, 1993, and has been explored and improved since then.

• 红磷化工有限责任公司 1989年从国外引进NorskHydro(诺斯克黑特罗 )公司半水二水再结晶浓缩工艺生产湿法磷酸 ,装置自 1993年 5月投产以来 ,一直处于摸索、改进状态。