First, the doors design philosophy: to resist the industrial, chemical, and Ordnance, military and other construction equipment or prone to accidental explosions, life safety and protection of personnel inside the building equipment in good condition, free from blast damage. Second, the design capacity of the doors: the doors system with superior performance antiknock antiknock reach 0.11Mpa-0.19Mpa (110Kpa-190KPa) ;, a number of certification and testing by internationally recognized; flexible and reliable operation of the system design, antiknock performance both fire performance. Third, the doors Applications: Generally used in industrial buildings, such as the petrochemical industry, power industry, petrochemical, military, military and other main plant rooms and various affiliated factories, such as shelters, substations, control room or channel . Is the source for the explosion hazard barrier security needs and set up a variety of special-purpose four protective doors, the doors Features: easy to open and close the doors, light load to meet project requirements. Fifth, the doors have safety facilities: the doors normally used in non-explosive situation. Six, the doors Standard: Lei Chen execute the doors Ministry of Public Security and Police Electronic Products Quality Inspection Center of Hebei Province Public Security Bureau office security precautions and the doors standards.