Jinxun into door and frame industrial at 1984. We are based in Guangzhou of China. One of our main doors is 6 panel, 9 panel and flush steel doors, the construction of the doors are made for North American market, the door is with finger joint pine, filled with ploy foam. We use 24 gauge and 26 gauge galvanized steel with powder coating or prime. We own a fully auto digit steel door frame machine line which was import from Australian. All of our doors, frames or jambs and other related building products made in China to internation standard. Steel panel doors 1 finger joint pine as door edge 2 solid wood as lock block 3 galvanized steel with powder coating or PVC coating finish 4 steel door frame with pvc coating in the knock down packing without any welding,unassembled for ease of transportation and we provide fully installation components and tools. 5.filling with poly foam 6.diversified color available 7.sound proof,warmth preserved,moisture proof. 8.40HQ:660sets 9.Our products all has good quality, competitive price and plus we provide good service.