CQM, as the national certification body (NCB) representing China to join the International Electrotechnical Commission (IECEx) multilateral certification system for explosion-proof Electrical Safety Certification system, has long been committed to the research and development of explosion-proof safety, quality and standards.
CQM is a certification body for China Compulsory Certificate (Explosion-proof Electrical Equipment), IECEx certification, and CQMEx Certification. At present, CQM can provide China Compulsory Certificate (Explosion-proof Electrical Equipment), IECEx explosion-proof electrical equipment certification, CQM explosion-proof electrical equipment certification, CQM explosion-proof electrical equipment maintenance service factory certification, as well as explosion-proof certification training, explosion-proof technical services and combination certification services (IECEx + ATEX "one-stop" combination certification services).

China Compulsory Certificate (Explosion-proof Electrical Equipment)
Explosion-proof electrical equipment has been officially included in the China Compulsory Certificate scope since October 1, 2019, from the previous production license to China Compulsory Certificate, and the transition period is 1 year. That is, since October 1, 2020, explosion-proof electrical equipment has not obtained China Compulsory Certificates and are not marked with China Compulsory Certificate marks, and may not be exported, sold, imported or used in other business activities. According to the latest China Compulsory Certificate catalog description and definition table, there are 18 types of explosion-proof electrical equipment included in China Compulsory Certificate. The standards involved are GB/T 3836.1~9, GB/T 3836.31.
As one of the designated certification bodies for China Compulsory Certificate, CQM prepares the certification implementation rules (CQM10-C2301-2024) in accordance with the requirements of the China Compulsory Certificate implementation Rules (Explosion-proof electrical equipment), and the implementation rules are jointly implemented.
IECEx Explosion-proof Electrical Equipment Certification
IECEx certification refers to the safety certification of explosion-proof electrical products (referred to as Ex equipmentproducts) recognized by the International Electrotechnical Commission. Its international certification of Ex products in accordance with IEC standards, the purpose is to ensure the appropriate level of safety of explosion-proof electrical products under the premise of eliminating unnecessary international duplication of certification and inspection, to promote international trade.
The ultimate goal of the IECEx system is worldwide acceptance of one standard, one IECEx Certification of Conformity and one IECEx Mark of Conformity.
As the only national certification body (NCB) representing China to join the multilateral certification system of the International Electrotechnical Commission's Explosion-proof Electrical Safety Certification System (IECEx), CQM can issue explosion-proof Type inspection reports (ExTR), Factory Quality Inspection Reports (QAR), IECEx Certification of Conformity (CoC), Select the product certification mode of type inspection (product inspection) + factory quality system inspection + post-certification supervision.
Decision Rule for IECEx: No decision rule is specified by the standards for IECEx testing, when comparing the measurement result with the applicable limit according to the specification in these standards. The decisions on conformity are made without applying the measurement uncertainty as described in IECEx OD 012 (i.e. “simple acceptance” decision rule).
CQM Explosion-proof Electrical Equipment Certification
CQM explosion-proof electrical equipment certification is one of the voluntary product certification services carried out by CQM. The CQM mark has been applied to show that the products meet the requirements of explosion-proof safety and quality.
CQM has been engaged in the research of explosion-proof electrical field since the 1990s, and has issued CQM explosion-proof electrical equipment certification for many enterprises, aiming to promote the improvement of product quality and enhance the international competitiveness of domestic enterprises.
CQM Explosion-proof Electrical Equipment Maintenance Service Factory Certification
CQM explosion-proof electrical equipment maintenance service factory certification is to provide explosion-proof electrical equipment maintenance service providers engaged in the repair, overhaul or transformation of explosion-proof equipment qualification status, technical strength and implementation process quality assurance ability and other aspects of the specific measurement, evaluation and recognition.
CQM explosion-proof electrical equipment repair service factory certification provides proof to explosion-proof equipment users, managers and groups to ensure the safety of explosion-proof equipment repaired, over repaired or modified by certified service providers.
Function and Significance
1. Improve device security
Rigorous evaluation: explosion-proof certification ensures safe and stable operation of electrical equipment in potentially explosive environments through rigorous evaluation of the design, manufacture and testing process of electrical equipment.
Risk reduction: The certification process ensures that equipment meets international/national safety standards, reduces the risk of accidents and protects people and property.
2. Promote international trade
International recognition: IECEx certification is an international certification system that has been widely recognized worldwide. Certified products and equipment are more easily accepted and used in the international market.
Simplified access procedures: Certification eliminates unnecessary repeated international inspection and certification of explosion-proof products, simplifies access procedures for explosion-proof equipment in the global market, and promotes the development of international trade.
3. Improve product quality
Compliance with standards: Obtaining explosion-proof certification requires products to comply with strict international/national standards and specifications, which encourages manufacturers to strengthen their control over product quality and safety.
Improved reliability: The certification process improves the quality level and reliability of the product, so that explosion-proof equipment can work stably in complex environments.
4. Enhance corporate reputation
Enhance reputation: Companies with explosion-proof certification enjoy a good reputation and credibility in the industry, demonstrating the company's commitment to product quality and safety.
Improve trust: Certification enhances the trust and satisfaction of consumers and customers to enterprises, which helps enterprises to expand the market and enhance competitiveness.
5. Regulatory compliance
Compliance with regulations: In China, explosion-proof electrical equipment has not obtained China Compulsory Certificates and are not marked with China Compulsory Certificate marks, and may not be exported, sold, imported or used in other business activities. And in other countries and regions, strict regulations and standards have been established for electrical equipment used in explosive environments. Obtaining explosion-proof certification can help companies ensure that their products comply with national and international regulatory requirements, avoiding possible legal risks and penalties.
Our Advantages
CQM has a nationwide market service network, more than 30 molecular companies, and professional service teams in each province, which can achieve a single point of contact window, multi-point service support, and quickly and effectively solve customer problems.
CQM has its own explosion-proof laboratory and has also contracted with a number of designated laboratories. CQM, together with 16 designated laboratories certified by CCC and 9 designated laboratories certified by IECEx in China, builds an explosion-proof certification platform, which can provide localized testing and one-stop certification services for enterprises.
CQM has successfully provided IECEx certification services for a number of enterprises, these enterprises through explosion-proof certification, their products have achieved a leap forward development, product quality and safety performance has been significantly improved. Enterprises that have obtained IECEx certification are more competitive in the international market, and their products have successfully entered the markets of many countries and regions, which not only expands the market share of enterprises, but also enhances the brand image and credibility of enterprises.