copper door features: 1.Material: Fillingmaterial: cold rolled steel plate and anti-fire wood board. Outerpurple copper sheet. Surface finished:99.9% high purity importedpurple copper sheet,which is imported from MKM Germany company.Donot become black for many years???using. 2.luxurious and durableappearance 1).the Surface of copper:carve or jointing lucky patternof copper ware:chagon,phoenix,lion.flower,coin.boat and so on.thepattern embody the chinese culture and lucky concept. 2).Thesurface of door panel:through many special and complexprocesss,such as soakage,polish,coat the clarity paint for specialused for automobile,which can avoid oxidation reaction caused bydifferent climate.environmental friendly, 3.Thickness of Doorleaf:52mm Thickness of Door surface copper panel:0.8mm Thickness ofDoor frame:100mm 4.the characteristic of guard against theft Inregard to design of inner structure,they are strictly in accordancewith inspection standard of USA UL lab and additional requirementof structure and quality for Security Door(like bank,cashbox),usingnet-like and parallel cold-rolled steel plate.5.shockproof,soundproof,moistureproof,climate-resistant,wear-resistant6.Accessories:lock,door sill,peephole,hinge Lock:exceed sixmulti-point lock,guard against theft Doorsill:stainless steel sillPeephole:high definition peephole Hinge:special stainless steelhinge. 7.opening direction of door Pull-to-push,side opening Smoothand silent for opening and closing, 8.Diversified designs,size andcolour are available. 9.conveyance:Qty/20???P 15---25PCS;QTY/40???P32---40PCS