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.
Products with Explosion-Proof Certification:
The new implementation regulations are divided into 17 product units:
Explosion-proof motors: Center height ≤ 160mm or rated power ≤ 15kW, Explosion-proof motors: 160mm < center height ≤ 280mm or 15kW < rated power ≤ 100kW, Explosion-proof motors: 280mm < center height ≤ 500mm or 100kW < rated power ≤ 500kW, Explosion-proof motors: Center height > 500mm or rated power > 500kW.
2. Explosion-proof electric pumps
3. Explosion-proof distribution equipment
4. Explosion-proof switches, control, and protection products
5. Explosion-proof starters
6. Explosion-proof transformers
7. Explosion-proof electric actuators, solenoid valves
8. Explosion-proof plug-in device
9. Explosion-proof surveillance products
10. Explosion-proof Communication and Signal Devices
11. Explosion-proof air conditioners, ventilation equipment
12. Explosion-proof electric heating products
13. Explosion-proof accessories, Ex components
14. Explosion-proof instruments and meters
15. Explosion-proof sensor
16. Safety Fencing
17. Explosion-proof instrument boxes

Explosion-proof Certification Categories -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
Explosion-proof certification is the process of verifying that equipment meets the requirements of explosion-proof standards, type testing, and routine tests applicable to it, and issuing relevant qualification certificates. Certificates can be issued for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products. Currently, international explosion-proof certifications can be categorized into domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification.

Basic Process of Coal Safety Certification and Agencies
Coal safety certification is a mandatory safety certification for equipment and products used underground in coal mines, adopting the method of "product testing + factory audit."
We must conduct both product testing and on-site audits of the manufacturing facilities for the products in question, as well as annual supervisory reviews, which is commonly referred to as factory audits.
Product testing requires that the products meet the coal safety standards.
For electrical products, consideration must be given to the explosion-proof standards required in coal mine gas environments, as well as meeting product performance requirements.
Factory audits primarily focus on the implementation of the ISO9001 production quality system, combined with the requirements of the Mine Products Safety Mark Implementation Rules for factory evaluations.
The Anbiao Center is the issuing and inquiry institution for coal safety certification.
Shenzhen ZhongNuo Inspection offers coal safety certification and mine safety consulting services, well-versed in the entire certification process and requirements.
Some explosion-proof technology engineering teams and factory inspection specialists are available to facilitate businesses in applying for the coal safety certification conveniently and quickly.
Our successful case studies include light boxes, remote controls, fiber optic temperature measurement devices, sensors, air compressors, mobile phones, thermal imaging cameras, and patrol robots.
If you have any needs in this regard, feel free to message us anytime for further discussion!

Domestic explosion-proof certification models are divided into three cases -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Explosion-proof certification system
Applicable Products: Electrical and non-electrical equipment used in places with explosive gases and dust, excluding those for mining purposes (except for products listed in the Explosion-Proof 3C Catalog).
Certification Mode: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Explosion-proof 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Mode: Combination of Type Testing and Factory Audit
Certification Certificate: CCC Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, an annual audit is required
3. Coal Safety/Mine Safety Certification System
Applicable Products: Various electrical and non-electrical equipment for use in coal mines and non-coal mines underground
Certification Mode: Combination of Type Testing and Factory Audit
Certification Certificate: Mine Product Safety Mark Certificate
Certificate Validity: 5 years
Annual Audit Required: Yes, an annual audit is required.
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.