Shanghai Kejian Chemical Co., Ltd. is devoted to the research and development of new and high technology products. With good development ability and advanced techniques, Kejian produces all kinds of water-proof butyl tapes and related sealants for car industry and building industry. Our main products are 'Top Best' filling sealants, 'Top Best' butyl tapes, 'Top Best' butyl tapes for window & door industry, 'Top Best' butyl sealants for steel construction, 'Top Best' hot-melt butyl sealants for pane industry, silicon sealants and polyester...