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.
IECEx Certification
IECEx is a certification system for explosion-proof electrical products, initiated by the International Electrotechnical Commission (IEC).
The purpose is to eliminate discrepancies in equipment and services used in explosive environments, and to promote international trade.
Maintain the level of equipment safety requirements. The current explosion-proof standard is IEC 60079.
IECEx certification has now become a pathway for products used in all hazardous areas to obtain international safety certification, and is currently recognized in many countries worldwide (including Australia, New Zealand, Brazil, Canada, China, Japan, South Korea, Malaysia, Singapore, South Africa, and the United States).
IECEx-certified certificates are automatically uploaded to the IECEx website, where manufacturers and end-users can locate the relevant documents.

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 (except for products listed in the Explosion-proof 3C Catalogue).
Certification Mode: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Intrinsically Safe 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Model: 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 both coal mines and non-coal mines underground
Certification Model: 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.

What are the markings on explosion-proof electrical equipment?
A complete explosion-proof marking includes:
Ex Mark
Explosion-proof type
Gas/Dust Combination
Temperature Group
Equipment Protection Level
Ex db ib IIc T4 Gb
Ex tb ⅢC T130°C Db
For more information, please contact Shenzhen ZhongNuo Inspection Technology Co., Ltd.!

How to Apply for Explosion-Proof Certification for Enterprises:
1. Self-Application: The company applies directly to the certification body, prepares relevant documents independently, assists in debugging the prototype, and modifies any non-standard sections in the documents. This process is relatively time-consuming and has a higher overall cost, requiring both time and effort.
2. Agent Application: Refers to the entire process of consulting and applying to Shenzhen ZhongNuo Testing Technology Co., Ltd., including material modifications, prototype debugging, and progress coordination, all of which are handled by the consulting agency. Provides good progress assurance. Fast certificate acquisition, controllable comprehensive costs, time and labor-saving.
Explosion-proof Certification Application Consultation Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.