... , oxalic acid, polymethacrylate, polyvinyl alcohol, potash(potassium carbonate), potassium sulphate, potassium solution residue, potassium dichromate, porassium chloride, mono potassium chromate, sodium ... chlorate, potassium pentasulfide, potassium phosphate, potassium sulfate, polyvinyl alcohol, PVC, pyrazole, halite ...