Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in consulting services for explosion-proof CCC certification. We have an extensive portfolio of consulting cases in the field of explosion-proof 3C certification. We are well-versed in the application process and technical requirements for explosion-proof 3C certification, and can provide clients with consulting services such as application assistance and factory audit guidance.
The防爆3C certification is a mandatory certification for explosion-proof electrical equipment listed in the Explosion-Proof 3C Catalog.
Combine type testing with factory audit.
Currently, the mandatory certification for some explosion-proof products has been in effect for over a year.
Many corporate clients are gradually becoming aware of and encountering the explosion-proof 3C certification.

Electrical Equipment for Use in Combustible Dust Environments Seeking防爆CCC Certification Standards
Ex-proof Type: Intrinsically Safe
Applicable explosion-proof standards:
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"
Explosion-proof Type: Dust-ignition-proof Enclosure
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust ignition-proof enclosures "t"
Explosion-proof Type: Encapsulation Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres – Part 1: Equipment – General Requirements
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by “m” type enclosures
Explosion-proof Type: Positive Pressure Type
Applicable explosion-proof standards:
GB/T 3836.1-2021 Explosive Atmospheres – Part 1: Equipment – General Requirements
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosures “p”

What is the difference between the corrosion protection grade, the protection grade, and the explosion-proof certification grade?
Many corporate clients are often in the dark about the required corrosion resistance, protection level, and explosion-proof certification level for their products.
Due to the products' names only differing by one character, and both referring to a certain grade aspect of the product.
Similar yet different, what are the differences between them?
Corrosion prevention involves measures to protect metals prone to rust, thereby extending their service life. This is typically achieved through physical, chemical, and electrochemical corrosion prevention methods. There are five common grades: indoor F1, F2, and outdoor WF, WF1, and WF2.
Protection rating, commonly known as IP rating, refers to the dust and water resistance level of the equipment, typically consisting of "IP" followed by two digits.
The explosion-proof grade generally refers to the certification level of the equipment's explosion-proof rating. Each electrical equipment applying for an explosion-proof certification will have a corresponding explosion-proof marking, including the type and grade of explosion-proof. The explosion-proof grade indicates the product's applicable explosion-proof area, gas/dust groups, temperature groups, and equipment protection level.
Evidently, these three belong to different concepts in separate fields.
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What requirements do applicants need to meet after converting explosion-proof electrical products to mandatory product certification (CCC certification)?
ZhongNuo Inspection: Mandatory Product Certification, also known as CCC Certification, the certification model includes type testing + initial factory inspection + post-certification supervision. In simple terms, it requires a factory audit. Applicant companies must possess production/inspection/shipping capabilities (or OEM/ODM).
Explosion-proof 3C Certification Consultancy Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.