... Model PWC centrifuge is a type of horizontal, spiral discharging filtrating equipment with ... acid, polymethacrylate, polyvinyl alcohol, potash(potassium carbonate), potassium sulphate, potassium solution residue, potassium dichromate, porassium chloride, mono ... phosphate, sodium sulfite, sodium tetraborate, sodium hyposulfite, tartaric acid, stannic sulfate, sodium phosphate, vegetable, vegetable ...