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What is the welder's certificate in Changzhou?

It is a vocational skill certificate issued by the national vocational skill appraisal department. Changzhou welder certificate is divided into arc welding, gas welding, argon arc welding, CO2 gas shielded welding, welding wire argon arc welding, etc. It is a vocational skill certificate issued by the national vocational skill appraisal department, which proves that the welder has certain welding skills and knowledge.