Shenzhen Zhongnuo Inspection & Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal safety certification.
What kind of companies are eligible to apply for the Coal Safety/Mineral Safety Mark? -- Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.
Application Requirements for Coal Safety Certification
Corporate Qualifications: Anbang Standard Center currently issues certificates only to companies engaged in production/manufacturing/processing or operating under the OEM model.
We have a fixed production facility; the company has production and testing capabilities for the products; a certain number of technical personnel; and a management system in place to ensure product quality and safety requirements.
(1) Manufacturing and assembly companies with fixed production facilities, equipment, and testing devices.
(2) The product applied for should be within the scope of the company's business operations.
(3) We have a comprehensive and effective quality assurance system.
(4) Possesses relevant technical capabilities;
(5) Other Relevant Conditions

The coal safety certification application process includes preliminary document review and submission, product testing, and on-site assessment.
The material review aspect assesses the timeliness and completeness of the company's prepared and provided documentation, while the product testing phase evaluates the specific structure, complexity, and testing projects of the product.
The on-site audit phase is also crucial; if an on-site audit is conducted, evidence can be collected directly. If issues arise during the audit process, continuous rectification and re-audit are required, which also increases the cycle time. The normal process for coal safety certification is approximately 4-6 months.

What standards are used for explosion-proof certification? What are the technical requirements?
An explosion-proof type is a type of electrical equipment explosion protection, where the housing can withstand the explosion of an explosive mixture that enters the interior of the housing through the housing joint surfaces or structural gaps, without being damaged, and prevent the ignition of an explosive gas environment formed externally by one or more gases or vapors.
Explosion-proof casings must possess both explosion-proof and explosion-resistant properties. Generally, the casings of explosion-proof products are rather bulky, suitable for products and equipment that are intended for fixed installations and use.
Combustible gas-tight joint width, gap, and roughness are the three key elements of explosion-proof housing design.
Design requirements for explosion-proof three elements vary depending on the different explosive gas environments used in mining Class I, non-mining Class IIA, IIB, and IIC. For specific details, refer to the design standards of GB/T3836.1 and GB/T3836.2.
ZhongNuo Inspection has long been dedicated to explosion-proof product design, testing, and certification services. We have a specialized team in the field of explosion-proofing, well-versed in the requirements of explosion-proof standards. We offer services including explosion-proof casing design, drafting, modification guidance, and certification agency assistance.
If you have a similar need, feel free to private message Shenzhen Zhongnuo Inspection Technology Co., Ltd. at any time!

We now have the explosion-proof 3C certification, how can we convert it 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 belong to different management systems, and the places where products are used are also different.
Two certifications belong to different certification systems and are mutually exclusive. Regardless of which certification is held,
Additionally, all certificates need to be re-applied for according to the new product application process. Similarly, if there is a Coal Safety/Miner Safety certification,
Obtaining a防爆 certification or防爆3C certification also requires reapplying through the new application process.
Coal Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.