... additive.dyestuff pigment,raw plastic,soap,fat,various resins and other chemical products. 2.Foodstuff industry: salt,monosodium ... vermifuge,etc. 4.Mining and metallurgical industry mineral products in copper,zinc and aluminium etc,and metal refined. 5. ... Environmental protection such as treatments of acid gypsum drainage and sludge purification.SS800 –NE three-column manually top discharge ...