Hangzhou Ruijiang Chemical Co. Ltd. was established in 1992,. "Ruichem" is a leading manufacturer and exporter of ?color? in China. There is 3 main department in Color area : Pigment. TiO2. Silicone Industry. Zhejiang Chun-An Foreign Trade Co. Ltd., established in 1973, was a state-owned importing and exporting company, with main business in Chemicals. In 2007, the above 2 companies were merged as one company, under the name of "Hangzhou Ruijiang Chemical Co. Ltd.". From 2009.2010, "Ruichem" is authorized as "Famous Exporting company" by Chinese government and "credit company" by State-owned bank. "Ruichem" is positively cooperationg with reserching institutes and focus on pigment like: Benzimidazolone. Quinacridone.