Tianjin is a local professional fire maintenance testing company with relatively strong technical strength. Its office is located in the airport economic zone, and its maintenance and testing projects are all over Tianjin. As a practical company, most of the projects are operated by ourselves and need strict cooperation.
As for the treatment, it is not very clear. Anyway, the industry is not very good at field work. If you want to earn a good income, you must expand your business and get the project back.