feature:1.its raw material is coal 2.suitable for making face mask,respirator,and so on Activated carbon mask cloth is a new filter material--be made from high efficient adsorption material coal activated carbon and non-woven combination,which is a chemical material has strong adsorption role.such as Benzenes,NHa,formaldehyde,VOC gas,set of filter dust,impurity particles and chemical adsorption ...