Arthur Wang Co. is based in Taiwan and lists a range of industrial chemicals on Global Trade Plaza. The catalogue includes Sulphamic Acid at 99.8% minimum purity, Copper Sulphate Pentahydrate offered in three copper-content grades (23%, 24.5% and 25%), Ferric Chloride in both solid hexahydrate (96% minimum) and solution (40% or 42% minimum), Zinc Chloride in anhydrous solid (98%) and liquid (62% and 50%) forms, Para Toluene Sulphonic Acid Monohydrate (PTSA) in four purity grades from 95% to 98%, and Potassium Carbonate at 99.5% in technical and food grades. Buyers can send an enquiry through Global Trade Plaza.