市政管网封堵

WE DIVE, WE CAN

Customer satisfaction and employee happiness are our 

unswerving pursuit. Changyun Company based in Shanghai,

 serves the whole country, We follow the service concept of

 customer first and establish a customer-centric service 

awareness,and following the service tenet of safety, timeliness,

 quality and efficiency;Continuously improve service 

capabilities and brand influence, and build the company 

into a leader in offshore solutions with underwater 

engineering as the core.