Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
Classification of Explosion-Proof Certification -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
Blast-proof certification is the process of determining if equipment meets the requirements of blast-proof standards, type testing, and routine tests, and issuing relevant qualification certificates.
Certificates are available for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products.
Currently, explosion-proof certifications internationally are categorized into domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification.

Domestic Explosion-Proof Certification
Domestic explosion-proof certification is a compliance inspection conducted on explosion-proof products used in explosive environments (including electrical and non-electrical products).
Issue explosion-proof certificates for products compliant with GB/T3836 standard.
Current domestic explosion-proof certification standards are essentially equivalent to the international IEC 60079 standard system.

Domestic explosion-proof certification models are categorized into three cases -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Explosion-proof certification system
Applicable Products: Electrical and non-electrical equipment used in places with explosive gases and dust, excluding those for mining purposes (products not included in the Explosion-proof 3C Catalogue)
Certification Model: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Intrinsically Safe 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: CCC Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, annual audit is required.
3. Coal Safety/Mine Safety Certification System
Applicable Products: Various electrical and non-electrical equipment for use in both coal mines and non-coal mines underground
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: Mine Product Safety Mark Certificate
Certificate Validity: 5 years
Annual Audit: Yes, an annual audit is conducted.

What should be noted when applying for explosion-proof certification?
Is the product design in accordance with the GB/T3836 standards?
2. Can certification documents be provided?
(1) Technical Drawings: Including circuit diagrams, assembly drawings, structural drawings, PCB layouts, part number drawings, BOM sheets, etc.
(2) Product Corporate Standards and Instructions
(3) Product Name, Model, Applicant Company
(4) Samples: Complete unit samples, batteries, uncapped circuit boards, non-metallic material surface samples, etc.
(5) Other Materials: Casting Process Documents, Copy of Ex Component Explosion Proof Certificate, Battery Testing Report, Shell Material Testing Report, Wireless Transmission Power Testing Report, etc.
Not all of the above information is required; it depends on the actual structure of the product and the explosion-proof type.
3. Do you have engineers with explosion-proof technology expertise?
4. Are there specific requirements for the certification body and explosion-proof rating?
5. Next is the budget for the costs.
For more details, please DM Shenzhen ZhongNuo Inspection Technology Co., Ltd. for communication!
Explosion-proof Certification Application Consulting Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.