Zhengzhou Yihang Water Purification Materials Co., Ltd. specialized in activated carbon for nearly 20 years . We have rich experience in the water and waste gas purification industry. Our main products include pellet activated carbon, granular activated carbon, powdered activated carbon,honeycomb activated carbon, mainly used for water purification, air purification, gold smelting, food and drug industry, etc.We have had a reliable reputation among our customers because of our professional services, quality products and competitive prices.