Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal safety certification.
China's domestic coal safety certification system is still quite strict.
A combination of type testing and factory production system audit is adopted to ensure that the applicant company is capable of ensuring product production and capability.
Even after obtaining the coal safety certification, the company must still undergo an annual supervision and evaluation by the Safety Standardization Center.

Do you need a factory audit to apply for the Coal Safety/Mineral Safety Mark? -- Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.
Necessary. Unlike the application for an explosion-proof certification, the control over mining markings is strictly enforced.
Application for Coal Mine Safety and Mine Safety Certification requires a factory audit of the applicant company.

What is the Coal Safety Certification?
Coal Mine Mark Certification (abbreviated as MA, KA Certification) is a mandatory certification implemented by the Coal Mine Safety Mark Office for products used underground in coal mines.
Products listed in the safety certification directory for mining products must obtain certification. Individuals and organizations are prohibited from selling, purchasing, or using mining products included in the safety mark management directory but not having obtained a safety mark.
To obtain a safety mark for the production of products, the manufacturer must go through several steps: application submission, preliminary review and qualification registration, evaluation, and certification issuance.

How can we apply for another Mine Safety Certification with the Coal Mine Safety Certification already in place? -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
If the product has already been certified with the Coal Safety Certification, a new Mine Safety Certification can be applied for using the original Certificate and Report. A new application process is required, but it will significantly reduce both time and cost. So, how to apply for the Coal Safety Certification if there is already a Mine Safety Certification? If the product has already been certified with the Mine Safety Certification and needs to apply for the Coal Safety Certification again, it must be applied for as a new product.
Coal Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.