electric engrave pen 1.Light weight 2.Easy to operate 3.Exquisite and convenient 4.marking materials of metal Specificationselectric engrave pen 1.Light weight 2.Easy to operate 3.Exquisite and convenient 4.marking materials of metalelectric engrave penUsage It is widely applied in marking materials of metal, chinaware, marble, glass, jade, crystal, etc.. The device is reasonable designed. It`s ...