昊華宇航化工有限責任公司20萬噸/年離子膜燒堿工程8套KHSJ-15KA/590V晶閘管整流裝置正在運行Haohua Yuhang 200000T/Y ionic membrane NaOH project8 sets of KHSJ-15KA/590V thyristor Rectifier are running