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When is the Linyi Stoker Certificate Examination?

May 19, 2022. According to an announcement issued by the Linyi Stoker Certificate Examination Authority: As of May 2023, the Linyi Stoker Certificate Examination will be on May 19, 2022. The boiler worker's certificate is a work certificate required for special equipment operators who burn boilers. This certificate is unifiedly supervised and issued by the current Market Supervision Administration (former Quality Supervision Bureau).