Zhengzhou Yihang Water Purification Materials Co.,Ltd. is a professional manufacture which has already had about 5 years history. We are a professional large scale manufacture of all types of activated carbon, integrating development and production together. Our products include columnar activated carbon, granular activated carbon, powdered activated carbon,honeycomb activated carbon, spherical activated carbon, activated alumina and iron oxide desulfurizer, mainly used for water purification, air purification, gold smelting, etc. We have a strict quality control system, and every step of the production process is tested at all times to ensure the best quality. We promise that we will be responsible all the way to the end once our services begin.