Zhengzhou Aoxiang Pharmaceutical Packing Co.,Ltd was an appointed company to produce butyl rubber pharma-stoppers by the SFDA in China.The company is specialized in producing the Butyl rubber pharma-stoppers.The company was certified by the ISO9001 in 2000 and the ISO14001 in 2003.We can supply the follow products: 1) Butyl rubber stoppers for injection bottles. 2)Butyl rubber stoppers for using of antibiotic(include kinds of freeze-dry) products. 3)Butyl rubber stoppers for using of blood taking liquid and biochemical products. 4)No-wash (to be sterile) rubber stoppers . 5)Membraniferous Butyl rubber stoppers .