... drilling, etching, milling, griding, turning --Material: stainless stainless steel pipe processing--Type:broaching, drilling, etching, milling, griding, turning-- ... , Zinc plating,Nickel plating, Tinting, Power coating, E-coating etcQuality controlProfessional precision manufacture1.Quality control:The defective ... Experienced&Responsible QC that you can reply on.3.Each part would be given 100% test ...