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.
Does a product with an explosion-proof certificate still need a coal safety certificate?
The explosion-proof certificate and coal safety certificate are applicable to different locations.
Intrinsically Safe Certificate typically refers to facilities used for explosive gases and dusts, excluding underground coal mines.
Coal Mine Safety Certificate refers to the safety certification mark for equipment and products used underground in coal mines.
So, whether to apply for an explosion-proof certificate or a coal safety certificate depends on where the product is used. If it's only used in non-coal mine explosive gas and dust environments, an explosion-proof certificate is sufficient. However, if it's also used underground in coal mines, a coal safety certificate is mandatory, and the two are not interchangeable.
Learn more details by sending a private message to Shenzhen ZhongNuo Inspection Technology Co., Ltd.!

What are the requirements for a company to apply for explosion-proof certification -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
For businesses, applying for a domestic explosion-proof certification does not impose specific requirements on the enterprise (except for the explosion-proof 3C certification).
Primarily, it's to assess if the product meets explosion-proof standards and whether the necessary 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 is a certification model that involves both type testing and factory inspection.
In addition to product testing, an annual audit of the manufacturing facility is required.

Certification standards for explosion-proof equipment used in explosive gas environments:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.2-2021 Explosive Atmospheres Part 2: Equipment protected by a flameproof enclosure “d”
GB/T 3836.3-2021 Explosive Atmospheres, Part 3: Equipment protected by intrinsic safety "e"
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 an overpressure enclosure “p”
GB/T 3836.6-2017 Part 6: Equipment protected by liquid immersion type “o” for explosive environments
GB/T 3836.7-2017 Explosive Atmospheres Part 7: Equipment protected by sand filling type “q”
GB/T 3836.8-2021 Explosive Atmospheres Part 8: Equipment protected by "n" type protection
GB/T 3836.9-2021 Explosive Atmospheres Part 9: Equipment protected by "m" type encapsulation

Flammable 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 enclosures "p"
GB/T 3836.9-2021 Explosive Atmospheres – Part 9: Equipment protected by "m" type enclosures
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust ignition-proof enclosures "t"
Explosion-proof Certification Application Consulting Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.