... -proof,fire-proof,water-proof,typhoon-resisting and safe walking for old person and kids.We are keeping innovation,improvement,will response ... your house.4.Aluminum surface color: we have many colors for you choose,white,silver,black,champagne,bronwn,etc. You can ... ,PVDF coating,electrophoresis and also anodizing. PVDF coating is especially for windows and doors close to island,have the anti-corrosion ...