... special minerals such as high quality wood carbon, fruit shell carbon, minerals carbon etc as raw materials,after moulding, forming, ... absorb poisonous substance.such as benzene, oxymethylene,methylbenzene,methane,carbon monoxide, chlorine, ammonia,radon and other smoke and peculiar ... gifts from relatives and friends and business activities of the best gifts. Size of carving plate: 192mm x 18mm ...