... handrail, partition, wardrobe, greenhouses and sunroom, etc---industrial aluminum profile for solar energy, LED, machinery, advertisement, transport, auto ... drilling holes, punching, milling, de-burr, chamfer, stretch bending, welding and so on--- Stainless steel welded tubesEngineering ... layer of anodic layer on the surface of the profile, available in different colors, including silver, champagne, ...