Some anti-door, Henan Province, where the manufacturer? Henan Jin Sheng air defense equipment, Ltd. is the designated national civil defense air defense equipment manufacturer, the company has been filed in the office of Henan Province, people, products can be sold to various regions of Henan Province, Henan Province, the current offer the lowest air defense equipment manufacturers, If you want to know air defense gate prices and specific technical information, please contact the Company, the business manager of Guyan Hong cooperate sincerely welcome you to inquire! What kind of air defense division door? What is the difference between each? For example, BFM and BHM, BM, BMH, MBGCC, GHSFM, GSFMG, FMDB, LFMDB etc., what's the difference? B is the national standard meaning, the Ministry of Construction! H is a living door sill air defense, that no threshold! M is a closed door means, F is the meaning of protection, S is a dual fan meant, G is the meaning of the steel structure, L is the meaning of invading the wall. MBGCC mean observation window is closed. BFM protective closed doors, BHM live threshold closed doors, BM closed doors, BMH explosion wave valve, GHSFM steel sill live double-leaf doors airtight protection, GSFMG bidirectional communication port protection force double-leaf doors closed, blocked by steel inner FMDB (Vintage The, also known as two-way communication port dual fan guard force closed closure plate), LFMDB airport board air defense wall blocking the door closed guard Atlas, give you introduce a few JSM landed double fan Zhengzhou air defense doors closed doors, FMP Protective shielding windows closed, HLF usually precast reinforced concrete block entrances. According to the basement level requirements, nuclear 6 6 Chang, Chang and nuclear 5 5 door models are not the same. Zhengzhou air defense air defense door door _ _ Luohe Jin Sheng air defense air defense office by Henan Province, Henan Jin Sheng formula provided by the air defense equipment Limited. Henan Jin Sheng air defense equipment Limited (www.jsrenfang.com/) strong, credible, in Zhumadian other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jin Sheng air defense and you hand into the brilliant, for a better future!