... process all kinds of precision metal parts as your require.Aluminum door window is one of our core products. Item nameCustom ... requirements. 2) Materials: stainless steel, low and high carbon steel, aluminum, alloy etc. 3) We manufacture metal parts according to customers ... drawings. 4) Colors: white, wood grain, grey, green and so on 5) Features: water-tightness, fireproof, reducing the noise out side ...