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.
Do you need to do an explosion-proof design before applying for the explosion-proof certification of the product?
That's for sure.
The process of obtaining a explosion-proof certification for products is to pass the relevant test items of the explosion-proof standards and obtain an explosion-proof qualification certificate.
To ensure the product passes the explosion-proof standard test items, it is necessary to design the product according to the test requirements, which is to implement explosion-proof design.
For explosion-proof requirements, refer to GB/T3836.1 and GB/T3836.2; for intrinsic safety designs, consult GB/T3836.1 and GB/T3836.4; and for positive pressure designs, refer to GB/T3836.1 and GB/T3836.5.
If your equipment is set to apply for explosion-proof certification and enter the explosion-proof market, please private message us right away! ZhongNuo Inspection has been dedicated to the explosion-proof field for many years, well-versed in the technical requirements of GB/T3836 and EN/IEC60079 explosion-proof standards, offering explosion-proof product rectification and design guidance, as well as a one-stop explosion-proof technical solution.

List of Domestic Explosion-Proof Certification Agencies:
1. Nanyang CNEX
2. Shanghai Coal Research Institute
3. National Electrical Appliance Quality Supervision and Inspection Center
4. Guangdong CQCEx National Explosion-Proof Equipment Quality Supervision and Inspection Center
5. National Coal Mine Explosion-Proof Safety Product Quality Supervision and Inspection Center
6. Jiamusi Explosion-Proof Institute
7. Tianjin PCEC
8. Shanghai NEPSI
9. Beijing Coal Research Institute CCRI, etc.
For applicants, what type of explosion-proof design to choose and what level of explosion-proof rating to aim for is actually the same across all authorized institutions. They are all institutions that have been certified and authorized by the state, with testing conditions that meet standard requirements, adhere to the same standards, and conduct the same testing. In identical conditions, it's an inevitable trend to opt for institutions offering more affordable services at a more competitive price. This is also a significant reason for the growing popularity of emerging explosion-proof companies.

What documents are required to apply for an explosion-proof certification?
1. Product Drawings and Documents: When an enterprise applies for a certification of explosion-proof compliance for intrinsically safe electrical equipment, it should provide assembly drawings, circuit diagrams, printed circuit board drawings, silk screen drawings, component material lists, and label drawings, among others. For non-intrinsically safe electrical equipment, the technical documents submitted for testing should include drawings that reflect the sample's explosion-proof performance (including assembly and component drawings). If the overall drawing can clearly indicate the product's explosion-proof parameters and structure, only the overall drawing needs to be submitted for testing.
2. Technical Documents: Include company standards/technical requirements. The company standards/technical requirements for products should be written in the prescribed format, and their content should include not only performance requirements of the product but also related防爆 aspects: such as basic parameters, explosion-proof markings, environmental conditions of use, explosion-proof performance requirements, relevant tests for explosion-proof performance, and markings related to explosion-proof.
3. Additional Information: For products with adhesive bonding or casting, provide the model names, performance descriptions, and relevant process documents for the adhesives and casting agents. For plastic shell products, supply the material and corresponding performance documents. Products with batteries require the relevant specifications for the batteries.

Process for applying for an explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product assessment and provide an initial quote for the applied product. Evaluate the product based on the company's product specification, electrical schematic, and component list, determine the appropriate type of explosion-proof certification suitable for the product, and offer an initial quote.
2. Offer samples for testing at the lab; the quantity of samples required varies depending on the product category.
3. Provide materials list review
Application documents, including applicant's information.
(2) Technical documents, including the submitted technical materials by the company, such as corporate standards or technical requirements, product drawings, user manuals, etc.
A. Corporate Standards/Technical Requirements: The corporate standards/technical requirements for products should be written in the prescribed format, including not only performance requirements of the product but also relevant content concerning explosion-proof aspects: such as basic parameters, explosion-proof markings, environmental conditions of use, explosion-proof performance requirements, related tests for explosion-proof performance, and markings related to explosion-proof.
B. Product Drawings: When applying for a防爆 certification for intrinsically safe electrical equipment, the applicant should provide assembly drawings, circuit diagrams, printed circuit board drawings, silk-screening drawings, material lists for components, and label drawings, among others. For non-intrinsically safe electrical equipment, the technical documents submitted for inspection should include drawings that reflect the sample's explosion-proof performance (including assembly drawings and component drawings). If the assembly drawing clearly indicates the product's explosion-proof parameters and structure, only the assembly drawing needs to be submitted for inspection.
C. User Manual - The user manual should include basic parameters, explosion-proof markings, product exterior diagrams, installation, maintenance, order instructions, and clear notices to the user regarding the importance of ensuring the product's explosion-proof performance during installation and use.
D. Additional Information: For products with adhesive bonding or casting, provide the model names, performance descriptions, and relevant process documents for the adhesive and casting agents. For plastic shell products, provide the material and corresponding performance documents.
4. Certificate Issuance
Explosion Proof Certification Application Consulting Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.