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 a one-stop explosion-proof technology consulting service.
What should be noted when applying for an explosion-proof certification?
Is the product design in accordance with the GB/T3836 standards?
2. Can certification documents be provided?
(1) Drawing and Documentation: Includes circuit diagrams, assembly drawings, structural diagrams, PCB layouts, numbering diagrams, BOM (Bill of Materials) 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 blocks, etc.
(5) Additional Materials: Pouring Sealing Process Documentation, 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 type of explosion-proofing.
3. Do you have engineers with explosion-proof technology expertise?
4. Are there specific requirements for frequent occurrence agencies and explosion-proof grades?
5. Budget for the expenses
For more details, please feel free to contact Shenzhen ZhongNuo Testing Technology Co., Ltd. for further discussion!

Sample Requirements for Explosion-Proof Certification Application:
The sample machines submitted by the company for inspection must match the approved drawings and be fully assembled; the number of units inspected should meet the requirements.
If special disassembly tools are required, they should be sent along as well.
For potting-type electrical equipment, a set of both potted and unpotted products should be submitted.
Observing windows' transparent pieces should be sent separately in an additional 5, with at least 3 pieces.
The transparent parts of the lighting fixtures should be sent separately with at least 5 pieces, plus an additional 8.
Rubber aging tests should provide 3 to 5 pieces of 35156 rubber blocks.
Insulate resistance testing of plastic casings requires two plastic sheets with a diameter of 150-60mm. If the dimensions permit, the plastic casing can be tested directly.
Generally, 1-2 finished products are required.

Why do companies need explosion-proof certification?
Blastproof certification refers to the process of determining if equipment meets blastproof standards, requiring type tests and the issuance of relevant certificates of conformity. It primarily targets Ex equipment or Ex components. Blastproof products generally refer to blastproof electrical products: electrical products or components with blastproof functions designed for environments where explosions may occur, capable of igniting surrounding explosive atmospheres under specified conditions.
Safety of explosion-proof equipment is closely related to safe production, which is why many countries implement explosion-proof certification systems for electrical products. Explosion-proof products must obtain an explosion-proof certification before they can be used in hazardous flammable and explosive environments. The #explosion-proof certification# is essential for ensuring the safety of the use of explosion-proof electrical products.
Blast-proof certification can boost product exports and further enhance the credibility and trustworthiness of both the company and its products, increasing market competitiveness. Companies requiring certification can obtain blast-proof certification domestically.

List of Domestic Explosion-Proof Certification Institutions:
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 go for is actually the same across all authorized institutions. They are all institutions that have been certified and authorized by the state, possessing testing conditions that meet standard requirements, adhering to the same standards, and conducting the same testing. Under the same conditions, the trend is inevitable to opt for institutions offering more cost-effective services at a more affordable price. This is also a significant reason why emerging explosion-proof enterprises are gaining increasing popularity.
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.