Where can I get a welder's certificate in Tianjin Wuqing? What's the procedure?

In the Ministry of production safety supervision and administration, the required procedures include the post operation certificate of this type of work.

Application conditions for intermediate vocational qualification certificate: 1. Hold the post operation certificate of the same type of work (this condition is only applicable to certain types of work). 2. Hold the primary certificate of the same type of work.