Changchun Dongshi Technology Trading Co., Ltd. is a high-tech enterprise specializing in the manufacture and sale of desulphurization catalysts and key equipment for desulfurization process. We also undertake the engineering design of desulfurization systems and turn-key projects. Our products have been distributed around the country, with a large market share. In a nationwide investigation activity, our products have been honored as "One of the Ten Catalyst Famous Brands". Chinese Quality ...