There are many companies of this type, so I can only give examples: Nanjing: 1. Nanjing Hengtianwei Co., Ltd. 2. Nanjing Hi-Tech Engineering Co., Ltd. 3. Jiangsu Fire Engineering Company Shandong: 1. Shandong Fire Protection Engineering Co., Ltd. Beijing: Beijing Wodewo Mechanical and Electrical Installation Co., Ltd. 2. Xiamen Zhunxin Mechanical and Electrical Engineering Co., Ltd. 3. Beijing Huaan Taida Fire Technology Co., Ltd. 4. Beijing Akop Mechanical and Electrical Engineering Co., Ltd. 5. Beijing Wanlongbo Fire Engineering Co., Ltd. 6. Beijing Jiading Mechanical and Electrical Equipment Installation Co., Ltd. 7. Beijing Jingcheng Security Fire Engineering Co., Ltd. 8. Beijing Guotai Ruian Fire Engineering Co., Ltd. 9. Nanjing Fire Equipment Co., Ltd. 10. Beijing Zhongjia Dacheng Fire Technology Co., Ltd. 11. Beijing Fuda Hong'an System Engineering Co., Ltd. 12. Beijing Lihua Fire Engineering Co., Ltd. 13. Beijing Dongfang Jing'an Fire Engineering Co., Ltd. 14. Beijing Qijian Fire Engineering Co., Ltd. 15. Maintenance engineer of Beijing Yurun Yefeng Technology Co., Ltd. 16. Beijing Xunda Fire Engineering Co., Ltd. 17. Beijing Kean Equipment Installation Engineering Co., Ltd. 18. Beijing Pingan Aoxiang Fire Equipment Co., Ltd. 19. China Zhongan Fire Safety Engineering Co., Ltd. 20. Beijing Runhongda Energy Environmental Protection Technology Co., Ltd. 21. Beijing Youansheng Fire Protection Technology Co., Ltd. 22. Beijing Binghe Fire Protection Engineering Co., Ltd. 23. Shouan Industrial Fire Protection Co., Ltd. 24. Beijing Yaanda Equipment Installation Co., Ltd. 25. Beijing Zhongxiao Weiye Safety Technology Engineering has the first-class fire protection qualification of the company Standards: 1. Corporate assets: net assets of more than 10 million yuan. 2. Main personnel of the enterprise: (1) No less than 5 first-level registered construction engineers majoring in mechanical and electrical engineering. (2) The technical person in charge has more than 10 years of experience in technical management of fire protection facility engineering construction, and has a senior professional title in the engineering sequence; there should be no less than 1 person with intermediate or above professional titles in communication, water supply and drainage, electrical, automation and other majors, and all majors . (3) There are no less than 20 construction site management personnel holding job certificates, and there are complete personnel such as construction workers, quality personnel, safety personnel, materials personnel, and document personnel. (4) There should be no less than 30 skilled workers at intermediate level or above who have passed the assessment or training. 3. Enterprise engineering performance: In the past five years, it has undertaken the construction of 2 fire protection facility projects with a single building area of ??more than 40,000 square meters (each project includes automatic fire alarm systems, automatic fire extinguishing systems and smoke prevention and exhaust systems). Qualified quality.