... rust Cast aluminum door,Cast aluminum explosion-proof doors, Xiamen Chen-Chi Doors Industry Co., LtdOur factory is a ... cracking,shock resistance,aniti-moth,keeping warm, moisture-proof, heat insulation,wear-resisting, flame retardancy,anti- ... 2.Hidden Hinge 1~120 degrees Infilling:Honeycomb fire retardancy material Feature: 1, By adopting the ... Cast aluminum door,Cast aluminum explosion-proof doors,