Fire gates, mine fire doors. How high days and then, on tiptoe even close to the sun. Smile hug every day, do people like sunflower-like warm fire gates is the company selling the product, the company production, processing and sales. On the market for permanent success. We produce mine fire doors fully in accordance with the specifications that you provide to create your own brand! Mine fire doors purposes: 1, to prevent the use of non-professionals entering between the main coal mine drainage pumping stations and the main substation chamber; 2, mining area substation, belt conveyors, winches, electrical power distribution equipment, transformers chamber, wired motor garage, library battery motor, fire equipment library, communication rooms and a variety of chamber charging room, library materials at the gates of the fire environment: 1, the working environment: -30 ℃ ~ 40 ℃ Pressure : 0 ~ 3800Pa 2, dangerous places for fire gates explosive coal dust and methane gas in the thank you can appreciate my information, my heartfelt blessing you! Contact: Liu.