BEIJING JIANKAI CONCRETE ADMIXTURE CO., LTD specializes in concrete admixtures field which contains R&D, manufacturing, distribution and providing technical service. It is member of China Association of Concrete Admixtures, well-known and class AAA model enterprise in building material industry and China ratepaying credit grade A company; It is an ISO9001 and ISO14001 accredited company. The annual production capacity is 300,000 M.T. in naphthalene series, sulphamate series and polycarboxylate ...