As committed to innovation and quality products to help users enhance the value of the professional manufacturers of activated carbon, we provide industrial and civilian, as well as a variety of special-purpose activated carbon product. The formation of gas, liquid, catalyst and the carrier more than 20 varieties in four series. The company adopted the ISO9001 international quality certification, has advanced and complete testing equipment. In addition to activated carbon products, in northern Hebei Chengde Yanshan Water Treatment Activated Carbon Co., Ltd also produces the required filter. Northern Hebei Chengde Yanshan Activated Carbon Co., Ltd. was founded in 1988, the predecessor of Chengde in Hebei Province Yanshan activated carbon for industrial companies, in joint-stock company established in 2003. http://*****