... price3.Secondary fabrication:cutting,sawing,milling, drilling, punching,deburring,stamping.4.OEM service5.certificate: ISO9001,SGS ... sink, aluminum/steel(iron)pipe,sheet metal parts, punching parts and metal hardware parts. 2. 5,000 square meters workshop ... , Automatic Profile Groove Machines, Automatic Cutting Machines, Punching Machines,Triangle Drawing Machines, Polishing Machines, Automatic lined ...