Natural anodized aluminum profiles can show aluminum origin color. Anodized is an electro-chemical treatment of the aluminium resulting in a hard durable finish that maintains the beauty and natural metallic luster of aluminium while reinforcing its natural ability to withstand the elements. Anodized is an integral finish. Most important, it have low cost with only natural anodized. It can protect aluminium surface from knock and scratch.
Its film thickness is 10-15um in Standard GB5237.