(pharmaceutical grade) woodiness powder activated carbon with high quality of sawdust as raw material by steam activation, through special production technology with physical method and chemical method of refined processing, grinding and become, has a large surface area, strong decoloring force, high purity, quick filtration speed, stable quality, etc., mainly used in: medicine, pesticides, Chinese and western reversed-phased decoloring and removing impurity refined, with absorption of intestinal bacteria and detoxification.