Shanghai Chang-nine service maintenance company of more than ten years experience, has a stable, professional, excellent maintenance team, and has many years of professional service technicians and installation, management experience, and continue to absorb new technology and advanced testing equipment to meet the needs of our customers. The company superb technical quality of service and reasonable fees in the factory and the majority of the new and old customers to gain a good reputation. Enterprise purpose: professional dedication, integrity and efficient. Our installation, maintenance staff service attitude, a good professional standards, professional high quality, professional service and trustworthy! The company's multi-network management, city services. 

 Service network: the District, including (Xuhui, Minhang, Luwan, Huangpu, Changning, Jing'an, Putuo, Zhabei, Songjiang, Hongkou, Yangpu, Qingpu and other districts) and the Pudong New Area, and so on. 
 "Customer first, quality first". Customer demand has been the first, to customers are thinking, solutions to customers needs, and to the credibility of development, to the best attitude and quality of survival, and all customer satisfaction as the standard, please contact us. 
 24-hour service hotline: Contact: Miss Zhou 
 24-hour motorcycle traffic-owned site service! Standing of this information!