?He Ze Da Tong Chemicals Co.,Ltd established in May 2002, is a big enterprise located in Dongyun Road in the Chemical Development Area in Taishan District, He Ze City. With an occupied floor area of more than 210,000 sq. meters, and close to He Ze Economic Development Area to the south and Jinghu Railway, Jin-Fu Expressway, Ji-Qing Expressway, He Ze Datong Chemical Plant enjoys a good location and convenient transport. Boasting top-notch technicians, advanced production techniques and complete quality testing equipments, our company?s main products are Chromium Salts. He Ze Datong Chemical Plant has passed the certification of ISO9001:2008, and the current annual production capacity has reached more than 100,000 tons. ?Chromium Salts series include: Chromic sulfate, potassium dichromate, sodium dichromate, ammonium dichromate, chrome oxide green, potassium chromate, basic chrome sulfate, chromium chloride, chromium nitrate and so on