Kangsheng clean flat door is honeycomb core material, which can be divided into steel plate spraying and stainless steel according to the door body surface decoration materials. According to the door installation form, it can be divided into single door, double door and mother door; according to customer requirements, manual and automatic forms can be customized. The door body is light, clean and beautiful; there are sealant strips around the door frame to ensure the air tightness of the door. There are also radiation proof structural doors.