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

What explosion-proof certifications are required for explosion-proof products? What are the institutions for applying for explosion-proof certifications?
Currently, the certification models for explosion-proof products entering the market in China mainly consist of three types.
1. Issue explosion-proof certificates for equipment used in environments with explosive gases and combustible dust in non-coal mines, which only requires product testing; upon passing, the certificate is issued.
2. Obtain explosion-proof 3C certification; for products listed under the explosion-proof 3C category, product testing and factory audits are required.
3. Coal Mine Safety Certification, for explosion-proof equipment used underground in coal mines, featuring product testing and factory audit certification methods.
ZhongNuo Inspection is a防爆 certification consulting firm, offering a one-stop service for explosion-proof certification and coal mine safety certification applications, including product design, modification, drawing evaluation, application, and factory audit. We are well-versed in certification standards and processes, with extensive case studies and experience. Feel free to message us!

The coal safety certification application process includes preliminary document review and application, product testing, and on-site assessment, etc.
The review of documents focuses on the timeliness and completeness of the information prepared and provided by the company, while the product testing phase involves examining the specific structure, complexity, and testing projects of the product.
The on-site review stage is also crucial; if an on-site review is conducted, evidence can be gathered directly. If issues arise during the audit process, continuous improvements and re-audits are required, which also increases the cycle time. The normal process for the Coal Safety Certification is approximately 4-6 months.

We now have the explosion-proof 3C certification. How can we transition to the Coal Safety or Mine Safety certification? -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
In China, explosion-proof 3C certification/examination certificate and coal safety/mining safety certification belong to different management systems, and the places where products are used are also different. The two certificates belong to different certification systems and are relatively opposed. Regardless of which certificate is held, the other certificate needs to be re-applied for according to the new product application process. Similarly, if a coal safety/mining safety certification is obtained, applying for an explosion-proof examination certificate or explosion-proof 3C certification also requires re-applying according to the new application process.
Coal Mine Safety Certification and Mine Safety Certification Consulting Services - Shenzhen Zhongnuo Inspection Technology Co., Ltd.