Powder Coating / Anodized Extruded Aluminum Enclosure GB5237-2008 Description: Good quality. Complete quality control system to ensure the quality of the product. The capacity is superior. Specialized production and stable quality, able to provide customers with various types of large quantities of aluminum frame. Surface Treatment: 1. Mill Finish 2. Anodized 3. Powder Coating 4. Wood Grain 5. Heat Insulation 6. Sandblast 7. Electrophoresis 8. Mechnically Polishing