Welders need a welder's license. Fusion welding and hot cutting operations (electric welding, gas welding, arc welding, electric welding and gas cutting, etc. ) also called work permit. The issuing agency-Work Safety Supervision Administration has the necessary employment certificate. You don't work without a certificate. It is divided into fusion welding and hot cutting operations, pressure welding operations and brazing operations. The certificate is a magnetic card, which is common throughout the country.
Use state
The welder's work often makes the work clothes completely wet. Chronic manganese poisoning is mainly seen in workers who inhale manganese dust for a long time. The clinical manifestations are mainly extrapyramidal nervous system symptoms, neurobehavioral dysfunction and mental disorders. People who are exposed to manganese include manganese mining and smelting, manganese covered electrode manufacturing, welding and cutting manganese alloys, and industrial workers who manufacture and use manganese dioxide, permanganate and other manganese compounds.