Shenzhen ZhongNuo Testing Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal safety certification.
Do I still need a Coal Safety Certificate if the product already has an explosion-proof certificate?
The explosion-proof certificate and coal safety certificate are applicable to different locations.
explosion-proof certificate generally refers to facilities used in places where explosive gases and dusts are present, excluding coal mine shafts
Coal Safety Certificate refers to the safety certification mark for equipment and products used in underground coal mines.
So, whether to apply for an explosion-proof certificate or a coal safety certificate depends on where the product is used.
If used only in non-mining explosive gas and dust environments, a防爆certificate is sufficient.
If coal mine operations are involved, a Coal Safety Certificate is mandatory; the two certificates are not interchangeable.
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How long is the validity of the Coal Safety/Mineral Safety Mark? -- Shenzhen ZhongNuo Inspection Technology Co., Ltd.
Currently, the valid period for the Coal Safety/Mineral Safety mark is 5 years, and a new certification must be obtained upon expiration.
Validity of coal safety and mine safety certifications for industrial trial products and new products varies, with options of 1 year, 2 years, or 3 years.
Imported products applying for the Coal Safety/Mineral Safety Mark on a batch basis do not have an expiration date; it is only valid for the products of that specific batch.

We now have the explosion-proof 3C certification, how can we convert it to the Coal Mine Safety or Mine Safety certification? -- Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.
In China, explosion-proof 3C certification/qualification certificate and coal safety/mining safety certification belong to different management systems, and are used in different product locations. These two certifications are part of different certification systems and are relatively independent. Regardless of which certificate is held, the other certificate must be reapplied for according to the new product application process. Similarly, if a coal safety/mining safety certification is obtained, applying for an explosion-proof qualification certificate or explosion-proof 3C certification also requires reapplying according to the new application process.

What are the requirements for applying for the Coal Safety/Mine Safety Mark? -- Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.
Meets safety production requirements for coal mines, in compliance with current standards, industry safety standards, and the "Coal Mine Safety Regulations."
(2) We have accurate and complete technical documents.
(3) New products produced with new materials, technologies, and processes should have evaluation opinions from relevant departments.
(4) Other relevant conditions.
Coal Mine Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.