Shenzhen Zhongnuo Inspection & Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal mine safety certification.
What standards are used for explosion-proof certification? What are the technical requirements?
An explosion-proof type is a form of explosion-proofing for electrical equipment, where the housing is capable of withstanding the explosion of an explosive mixture that enters the interior through the housing joints or structural gaps without being damaged, and without igniting an explosive gas environment formed externally by one or more gases or vapors.
Explosion-proof casings must possess both anti-explosion and explosion-proof capabilities. Generally, the casings of explosion-proof products are rather bulky, suitable for products and equipment that are fixedly installed and used.
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 different explosive gas environments in mining Class I, non-mining Class IIA, IIB, and IIC. Specific standards can be referred to in GB/T3836.1 and GB/T3836.2.
Zhenuo Inspection has long been dedicated to explosion-proof product design, testing, and certification services. We have a specialized team in the explosion-proof field, well-versed in the requirements of explosion-proof standards. We offer services including explosion-proof housing design, drafting,整改 guidance, and certification agency services.
If you have a need for this as well, feel free to message Shenzhen Zhongnuo Inspection & Technology Co., Ltd. at any time!

What kind of companies are eligible to apply for the Coal Safety/Mineral Safety Mark? -- Shenzhen Zhongnuo Inspection & Technology Co., Ltd.
Application Requirements for Coal Safety Certification
Company Qualifications: Anbang Standard Center currently issues certifications 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 our products; we have a certain number of technical personnel; and we have a management system in place to ensure product quality and safety requirements.
Manufacturers and assembly companies with fixed production sites and equipment, including testing equipment.
(2) The product applied for must fall within the scope of the company's business operations.
(3) Possesses a comprehensive and effective quality assurance system;
(4) Possesses relevant technical strength;
(5) Other Relevant Conditions

What are the requirements for applying for the Coal Safety/Mine Safety Mark? -- Shenzhen ZhongNuo Inspection & Testing Technology Co., Ltd.
(1) Meets safety requirements for coal mine production, 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, or processes should have evaluation opinions from relevant departments.
(4) Other relevant conditions.

What documents are required to apply for the Coal Safety/Mine Safety certification?
(1) Corporate Standards
(2) Product Manual
(3) Product Drawings (circuit diagrams, PCB layouts, schematics, assembly drawings, hydraulic diagrams, location maps, etc.)
(4) Bill of Materials (BOM)
(5) Label, factory certification, etc.
(6) Sample
Coal Mine Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.