Tangshan Sanjiang Chemical Co., Ltd. which is located in Nanpu Economic Development Zone of Tangshan in China is a specialized manufacturer and exporter of sodium metabisulfite, ammonium thiocyanate, sodium sulfite and other chemical products. Now, our company covers an area of 14600 square meters and has 130 employees. Our company was established in 1998 and the former name is Tangshan Hongruida Co., Ltd. So we have been in this line for more than ten years. With the development of ...