door cum window burglarproof metal doors and windows 1.Material:6063 2.Surface treatment: mill,anodized, Powder Coated,brush, sand blasting, polishing, bright dip ... 3. cutting, precision CNC, millling, lathing, punching, drilling, welding and assembly 4.Serice: OEM service is workable 5.Accepted Delivery Terms : FOB, CFR, CIF,..