1. Main materials: Copper2. Infill solid hardwood board or CFC-Free Polyurethane foam with more superb sound insulation, thermal insulator.3.Surface finished by Copper Plating(Not painting, Scratch Resistance and never fade) with real Bronze or Brass that make the outward appearance looks like the copper door but cheaper.4. Thickness :customized;5. Locks: Specialist security lock with more locking points. (alternative available)6. Design: Diversified available.7. Color: Diversified available.8. Size available: As per requirement.9. Accessories: Hinges, locks, handles, viewer, doorbell, rubber seal, installing bolts.10. Opening direction: Left or right; in swing or out swing.11. Opening degree: 110 degree, 180 degree.12. Packing: Foam board or foam plastic bag and strong chipboard (special package requirement acceptable to us).13. OEM&ODM is available.