Filler material inside the doors are: rock wool, aluminum silicate fiber cotton, perlite, silicon calcium fireproof panels. The doors of the main accessories are smoke strip (compartment smoke effect), behind closed doors (to keep the door closed, as is often used in the play when the fire broke open the door quickly shut the doors of the role), rank (press sequential double door closed doors of the role); conventional accessories fire lock, putting locks, hinges, fire glass. 1, in the event of an explosion, according to the explosion incident pressure and the reflected power notice set. Blow the doors can withstand this kind of pressure within the scope of, and achieve the necessary protection against casualties and property losses. 2, in the case of an explosion, did not meet pre-set explosive, the doors can still be used normally. 3, when the explosion occurred, the explosive force reaches the preset can be deformed, but still maintain the use of the components of the door, to avoid personnel are retained, blocking the storm. 4, if necessary, confined isolation, and prevent the direct isolation of space and the outside air convection, was cut off in order to reduce the space protected by external contamination. 5, the doors is a safe facility, with autistic features and emergency escape capabilities. 6, more suitable for dangerous goods stores, factories, mines, chemical industry and the boiler room of the danger zone. Comparative 7, and the doors of the conventional: the traditional reason the doors due to the weight, it is difficult to easily by personnel after closing, so that in actual use, typically in the open or semi-open state. The specification requires that at the time of the explosion, the doors must be closed in order to achieve the anti-knock function. So in theory, the doors tradition can antiknock, but the actual use is difficult to really difficult to achieve antiknock effect, for important equipment and personal safety are a very large security risk.