This depends on the project bidding instructions and requirements. For example, some of the gas fire extinguishing project bidding will require the applicant to have the qualification category and level is: fire facilities
professional contracting for the second level of engineering and electromechanical equipment installation professional contracting second level at the same time also need to have the safety conditions of the enterprise, and to obtain safety production license ; some of the project on the qualification category of the project manager and level requirements: such as electrical engineering professional
electromechanical engineering. The project also has requirements for the project manager's qualification category and level: such as electromechanical engineering
second level constructor and above. Carbon dioxide fire extinguishing system is currently the only gas fire extinguishing system that can be applied locally.
Fire extinguishers are widely used for the protection of some parts that can not be extinguished with water to avoid fire damage, gas fire. Such as telecommunications equipment room, radio and television equipment, generator room, electrical equipment room, transformers, oil circuit breakers, electric motors, internal combustion engines, electrical machinery room, library and archives building, scientific research and test building, valuable instrumentation and equipment room, large ships, oil plants and other places.