Door Fan Test air tightness test, mainly to test the overall air tightness of the building (building envelope) and the air leakage detection of exterior doors and windows or any local area, is mainly implemented FM, NFPA, CEN, JGJ and other related standards. Door Fan Test gas tightness test system is composed of blower doors, sealed doors, gas flow instruments, etc., which are widely used in fire gas protection zone integrity testing, LEED certification evaluation and other fields. Our company is the authorized agent of Canadian Retrotec company to designate the designated fire gas protection zone Door Fan Test air tightness test. Our testers have passed the formal training of Canadian Retrotec, and the testers are all on-the-job training and testing**. The Door Fan Test of the fire protection zone is mainly tested by positive or negative pressure, with the necessary infrared thermal imaging detection tools, smoke generators and other auxiliary equipment, and the sealing degree of the envelope structure of the gas protection area. According to the test results, we provide the most effective air tightness solutions to ensure the effectiveness of the fire extinguishing function of the existing gas extinguishing system and ensure that the project successfully passes the audit of third-party insurance companies, consultants and group head offices. Fire Air Tightness Test / Air Tightness Test, Air Tightness Test, DOOR FAN TEST Fire Air Tightness Test http://www.doorfantest.com.cn, Door Fan Test Air Tightness Test, Fire Air Tightness Test, Door Fan Test, American Retrotec DOOR FAN TEST, DoorFan Test CleanAgent Fire Extinguishing Systems, Gas Protection Zone Fire Test/Air Tightness Test, Application of House Air Tightness Tester in Fire Protection and Building Energy Conservation, Air Tightness Test of Blower Door, Tightness Test of Gas Protection Area of Fire Protection Area, Door Fan Test Service, IT Room Overall Air Tightness Test Service, Building Air Tightness Test Service, Gas Extinguishing System Residence Time Test, Gas Fire Extinguishing System Leakage Area Test Service, Air Change Number Test Service, Clean Room Air Tightness Test Service, Passive house air tightness test service, Leed certified air tightness test service, port electrical control cabinet air tightness, air change number test service, chemical island air tightness test service