... special minerals such as high quality wood carbon, fruit shell carbon, minerals carbon etc as raw materials,after moulding, forming, sand ... absorb poisonous substance.such as benzene, oxymethylene,methylbenzene,methane,carbon monoxide, chlorine, ammonia,radon and other smoke and ... the best gifts. Size of carving plate: 192mm x 18mm Gross weight: 0.844kg Material of plate: activated carbon Cover ...