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 are the requirements for a company to apply for explosion-proof certification? -- Shenzhen Zhongnuo Inspection & Testing Technology Co., Ltd.
For enterprises, applying for a domestic explosion-proof certificate imposes no special requirements on the company (except for the explosion-proof 3C certification).
Primarily, it's to check if the product meets the explosion-proof standards and whether the required certification documents can be provided.
If the product falls under the explosion-proof 3C certification category, the applicant must have a production factory (OEM/ODM is also acceptable).
Because the explosion-proof 3C certification follows a certification model that includes both type testing and factory inspection.
In addition to product testing, an annual audit of the manufacturing facility is required.

How to inquire about the explosion-proof certificate
Buyers and selectors of explosion-proof electrical equipment always opt for manufacturers or distributors with valid explosion-proof certifications.
So, as a consumer, how can users verify if the explosion-proof certificate is genuine and valid?
Currently, there are over a dozen authorized certification bodies in China that issue explosion-proof certificates.
There is no unified platform for querying explosion-proof certification issued by various institutions.
Explosion-proof certificates issued by various institutions can only be verified on their respective websites.
Of course, each issuing authority can verify the authenticity of certificates by phone.
If the query certificate is genuine, the main parameters and validity period will be displayed below.
If so, of course, it couldn't be found.
It's worth noting that due to the manual upload of certification documents by various issuing authorities, there is a certain degree of lag.
That is to say, the newly acquired certificate may not yet be searchable on their website.
This requires a direct consultation with the shipping agency.

Flammability Dust Environment Explosion Proof Certification Standard:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.4-2021 Explosive Atmospheres Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosure "p"
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by “m”-type encapsulation
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust-protection enclosures "t"

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 Technical Documents: Includes circuit diagrams, assembly drawings, structural drawings, PCB layouts, part number drawings, 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: Casting Sealing Process Documents, Ex Component Explosion Proof Certificate Copy, 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 its explosion-proof type.
3. Do you have engineers with explosion-proof technology expertise?
4. Are there specific requirements for the frequency of occurrence and explosion-proof grade?
5. Budget for costs
For more details, please feel free to contact Shenzhen Zhongnuo Testing Technology Co., Ltd. for further discussion!
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.