How to check whether the welder certificate issued by Daqing Market Supervision Bureau is true or false?

You can check it on the website of the State Administration of Work Safety.

First, enter "state administration of work safety" in the search engine to enter official website. Open the "Service" entrance in official website, open the inquiry system, and follow the relevant prompts.

State administration of work safety is a department engaged in the management and supervision of social safety production. It has the functions of organizing and guiding the publicity and education of national safety production, being responsible for the safety training and assessment of safety production supervisors and coal mine safety supervisors, and organizing, guiding and supervising special operations personnel according to law. Therefore, it can check the authenticity of the welder certificate on its website.