... Safe & Waterproof ,can be last for many years.Shanghai yihua company manufacture the products and technology including:1. ... embossing,sandblasting, oxidation, plating chromatically, and metal surface printing, offset printing, etc.3. metal die-casting nameplate catelogue: zinc ... contact me, this is Helen Liu from shang yihua printing Co., Ltd .my Trademanager Number is cn1000436921 , please add me. ...