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 Testing Technology Co., Ltd.
For businesses, applying for a domestic explosion-proof certificate does not impose any special requirements on the company (except for the explosion-proof 3C certification).
Primarily, it's about checking if the product meets explosion-proof standards and if you can provide the necessary certification documents.
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 incorporates type testing and factory audit.
In addition to product testing, an annual review of the manufacturing facility is required.

Many corporate clients are often in the dark about the required corrosion resistance, protection, and explosion-proof certification levels for their products.
Due to the products' grades being only one character different, and both referring to a specific aspect of the product, they are similar yet distinct.
What are the differences between them?
Corrosion prevention involves measures to protect metals prone to rust, thereby extending their service life. Common methods include physical, chemical, and electrochemical corrosion prevention. There are typically five levels: 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 rating generally refers to the equipment's explosion-proof certification level. Each electrical equipment applying for explosion-proof certification will have a corresponding explosion-proof marking, including the type of explosion-proof and the explosion-proof rating. The explosion-proof rating indicates the product's applicable explosion-proof zone, gas/dust group, temperature group, and equipment protection level.
Evidently, these three belong to different concepts in different fields.
For more information on this topic, please feel free to contact Shenzhen Zhongnuo Testing Technology Co., Ltd. at any time!

Explosion-proof product categories certified:
The new implementation details 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 connection device
9. Explosion-proof surveillance products
10. Explosion-proof Communication and Signal Equipment
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 cabinets

Coal Mine Safety Certification is a mandatory product certification for equipment and products used underground in coal mines, implemented through a "product testing + factory audit" approach.
We must conduct both product testing and on-site audits of the manufacturing facilities for the products in question, as well as annual supervisory assessments, which is commonly referred to as factory auditing.
Product testing requires compliance with the coal safety standards, such as electrical products needing to meet explosion-proof requirements in the coal mine gas environment, while also satisfying product performance standards.
In the factory audit aspect, it is primarily based on the ISO9001 production quality system, with additional requirements from the safety sign implementation rules for mining products incorporated into the factory evaluation. Therefore, applicants must have their own production factory or an OEM factory. Note that not all products are eligible for the coal safety certification through the OEM application process.
The Anbang Center is the issuing and inquiry authority 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. We have a dedicated explosion-proof technology engineering team and factory audit consultants to facilitate businesses in applying for coal and mine safety certifications conveniently and quickly. Our successful cases include light boxes, remote controls, air compressors, fiber optic temperature measurement devices, sensors, mobile phones, and thermal imaging cameras.
Feel free to send us a direct message at any time if you have a need in this area for further discussion!
Explosion Proof Certification Application Consultation Service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.