Doors refuge chamber refuge chamber door emphasis is: a high starting point, high-quality, high-speed, high-efficiency, large-scale business development, to instill the idea that efficient processing among the refuge chamber door in order for the majority to bring high value, you are also the same for us to create tremendous value. Refuge chamber door Features: 1, the first door using the outside of a certain intensity of the shock wave not only withstand, but also blocking protective closed doors toxic gases; the second door can stop using toxic gases closed doors. Between the two doors of the transition chamber, a sealed door of the safe-haven survival room. 2, protective closed doors airtight good, reliable sealing, open and close flexible. It can block harmful gases into the refuge chamber. Ensure refuge chamber pressure remain above the outside atmospheric pressure. 3, with a viewing window, high-strength tempered glass, can withstand a certain intensity of the shock wave. 4, protection from both inside and outside the closed door can open, with a waterproof, every stabilization and noise reduction 5, sealing method using a groove technology, the sealing material in the closed case, to protect the seal groove, so also do to protect the effect of the sealing material. Guarantee harmful gases can not enter the refuge chamber inside, really played a refuge chamber sealing effect. Some others products, we also have. Our products, others may not have.