Coal Mine Logo Certification (abbreviated asMA、KACertification is a mandatory certification implemented by the National Coal Mine Safety Mark Office for underground coal mine supplies. All products listed in the mining product safety certification catalog must obtain a certification certificate.No unit or individual is allowed to sell, purchase, or use safety signs that are included in the safety sign management catalogZhongnuo TestingMining products that have not obtained safety signs. Product manufacturing enterprises applying for safety signs need to go through several steps, including filling out the application form, initial review and qualification registration, evaluation and certification.

Intelligent safety helmet used in underground minesA common product that needs to be used underground in coal minesCoal safety certificationof.

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