Production introduction: Bamboo carbon takes Mengzong Bamboo which grows at hometown of bamboo-Anji County, Zhejiang Province as materials as raw materials, with high temperature pyrogenation, it is refined manufactured. The bamboo carbon is fine and porous, pore of 2-3 microns for each. Specific surface of each gram of carbon is about 700 square meters. Bamboo carbon has capacities of superior absorption, negative ion discharge and far infrared, and air temperature bi-directional conditioning and degerming. If you put it indoor, it can remove benzene, formaldehyde, chlorides, sulfides and other harmful chemicals and odors, peculiar smell and humidity after decorating the house. Features: 1) Product name: Purification Carbon for Living Room 2) Specification: 25cm x 32cm 3) Employed standard: Q/AZ01-2003 4) Quality class: Class I 5) Component of outside material: non-woven fabrics 6) Component of filling: 100% bamboo carbon granule about 2,000g x 2 bags 7) Inspector no.: 8 8) Date of production see product label