| A.Edge warping |
| B.Shape keel |
| C.Hight specification armor plate |
| D.Reinforce anti-theft |
| E.Built-in reinforced framework |
| F.Anti-theft special brand lock |
| G.Upper bottom side lock pin |
| H.Wooden board |
| I.Peephole |
| J.Doorsill fixed pin |
| K.Soild wood hinge |
| L.Stainless steel hinge |
| M.Fire resistant asbestos |
| N.Thickened burglarproof edges of door leat |
| O.Soundproot seal |
