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 and documents needed to apply for an explosion-proof certification?
The explosion-proof certificate is a safety certification for equipment and products used in environments with explosive gases or combustible dust.
Certificates are available for Ex equipment and Ex components.
Products require a防爆certification, and must undergo a explosion-proof standard test.
Provide drawings and technical documents that meet explosion-proof standards.
The technical documentation here includes product manuals, corporate standards, electrical schematics, PCB layouts, assembly diagrams, exploded views, battery testing reports, specifications, potting process files, wireless transmission power reports, and material reports for the housing.
Of course, not all of this information is required; it depends on the product structure and explosion-proof type for further assessment.
ZhongNuo Inspection has years of experience in explosion-proof product testing and certification services.
We offer consulting services for explosion-proof design, drafting, circuit, and structural modifications. Full-process consulting on obtaining explosion-proof certification is available. Feel free to inquire at any time!

The explosion-proof certificate is an explosion-proof certification model for products outside the explosion-proof 3C catalog.
As of October 1, 2009, certain explosion-proof electrical equipment was included in the CCC certification catalog, which is a mandatory product certification. Products listed in the catalog require an explosion-proof 3C certification, following the "product testing + factory audit" model. For a detailed explosion-proof 3C certification catalog, please refer to the relevant content on our website. Explosion-proof products not listed in the catalog can opt for an explosion-proof qualification certificate; certification is obtained simply by passing the product testing.
The general process for obtaining an explosion-proof certification includes: submitting relevant product documents, conducting product testing, and upon passing the test, issuing the explosion-proof certification. During the application process, ensure your product meets the relevant explosion-proof standards and requirements.
If you're unfamiliar with explosion-proof standards and certification requirements, no worries. Shenzhen ZhongNuo Testing Technology Co., Ltd. offers explosion-proof design and modification services, as well as certification agency services for intrinsic safety, flameproof, encapsulation, and positive pressure types, to help businesses conveniently obtain explosion-proof certificates.

What are the requirements for a company to apply for explosion-proof certification -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
For enterprises, there are no special requirements for applying for domestic explosion-proof certificates (except for the explosion-proof 3C certification).
Primarily, it's about checking if the product meets the explosion-proof standards and whether the required documentation 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 type testing and factory audit.
In addition to product testing, an annual audit of the manufacturing facility is required.

Intrinsically Safe Certification and Ex-proof Certification are two common types of explosion-proof protection, differing fundamentally in their explosion-proof principles, particularly in the following aspects:
The explosion-proof certification typically involves using explosion-proof enclosures. These enclosures must be sufficiently thick and strong, so that in the event of an internal explosion, the flame is extinguished due to the width, gap, and roughness of the junction surface of the enclosure, preventing ignition of the external hazardous environment. On the other hand, even if an explosion occurs in the external hazardous area, the explosion-proof enclosure retains its blast-resistant properties. In summary, the explosion-proof enclosures can withstand and resist explosions, but the equipment tends to be heavier.
The intrinsic safety certification, also known as intrinsic safety approval, ensures that even in the event of a predicted failure, the energy produced is not sufficient to ignite surrounding explosive materials, achieving intrinsic safety. Therefore, intrinsic safety products have higher requirements for device circuits and working power, and are generally suitable for handheld devices and low-power products.
Additionally, there is a composite explosion-proof certification. This indicates that the product cannot achieve explosion-proof with a single type of explosion-proof design; it must utilize two or more types. For instance, explosion-proof equipment with antennas, where the antenna section is typically intrinsically safe, this equipment is both explosion-proof and intrinsically safe. However, it's important to note that a composite explosion-proof product does not mean the product must meet all the requirements of different explosion-proof types simultaneously, nor does its explosion-proof level necessarily exceed that of a single type. The explosion-proof level of the product primarily depends on the gas/dust category, temperature group, and equipment protection level.
For more information on explosion-proof certifications such as intrinsic safety and flameproof, please feel free to consult Shenzhen Zhongnuo Testing Technology Co., Ltd. at any time.
Explosion-Proof Certification Application Consultation Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.