... Design,Quick Sample 4) OEM OK Polished Aluminium Window/Door Knobs for Door/ WindowSpecification:Material: Alluminum ... Treatment: Anodized, Power Coating, Sandblasting, Polishing, Grinding, Painting, Screen printing, Tumbling , Electroplating, Fabrication: Sawing, Deburing, Milling, ... -equipped and efficient ISO 9001: 2000 certified factory, we process extensive design and manufacturing experience ...