How to apply for Yinchuan IA explosion-proof certification? Shenzhen Zhongnu Inspection

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.
The cost of obtaining explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1. Do you need a防爆Certificate or a防爆3C Certification? For the防爆3C Certification, a factory audit is required, which involves additional costs for the audit fee, the travel expenses of the auditor, and the applying fee and Certificate fee for the 3C Certificate.
2. Related to explosion-proof markings. Different explosion-proof markings have different explosion-proof items, and naturally, the costs vary accordingly.
3. Domestic explosion-proof certification or international explosion-proof certification? The same explosion-proof mark, ATEX/IECEx certification is much more expensive than the domestic explosion-proof certificate, and it also requires factory audit. North American explosion-proof certification is even more expensive, over $100,000+
4. Do you need a retest? Some customers' products haven't even been designed with explosion-proof features. Revising them adds extra costs. Plus, if the product includes batteries, battery testing is an additional expense, especially for those that keep failing the tests.
5. Needed or not. Labs often have a high volume of orders, and there are often long waiting queues. If needed, there will be a fee involved.

Explosion-proof Certification Categories -- Shenzhen Zhongnuo Testing Technology Co., Ltd.
Electrical Equipment for Explosive Gas Environments
Explosion-proof type d
(2) Explosion-proof type e
Type 4 i
(4) Positive Pressure Type P
(5) Immersion Type
(6) Sand-filled type q
(7) Cast-in-place
(8) N-type
2. Electrical Equipment for Combustible Dust Environments
Dust-Proof Ignition-Resistant Housing
(2) Positive Pressure Type
(3) Intrinsically Safe
(4) Cast-in-place
3. Explosion-proof type S
4. Composite:防爆型式 that combines two or more of the aforementioned types

The 3C certification for explosion-proof electrical products, also known as the China Compulsory Certification (CCC), is a crucial measure to ensure consumer safety and enhance product quality management. As of October 1, 2019, explosion-proof electrical products were included in the CCC certification scope and became mandatory from October 1, 2020. This certification system not only requires products to meet specific standards but also involves a series of processes from design, production to after-sales supervision. The following will elaborate on the implementation details of the explosion-proof electrical 3C certification.
I. Standards for Certification Basis
The mandatory certification standards for explosion-proof electrical products were released on October 11, 2021, and will be officially implemented on May 1, 2022. These standards include:
GB/T 3836.1-2021: Explosive Atmospheres – Part 1: Equipment – General Requirements
GB/T 3836.2-2021: Explosive Atmospheres - Part 2: Equipment protected by an explosion-proof enclosure "d"
GB/T 3836.3-2021: Explosive Atmospheres – Part 3: Equipment protected by an “e” type of increased safety
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 3836.8-2021: Part 8 - Equipment protected by "n" type for explosive atmospheres
GB/T 3836.9-2021: Explosive Atmospheres – Part 9: Equipment protected by a "m" type of encapsulation
GB/T 3836.31-2021: Explosive Atmospheres, Part 31: Equipment protected by dust ignition-proof enclosures "t"
These standards provide detailed specifications for the requirements and testing methods of explosion-proof electrical products in flammable and explosive environments, serving as a technical basis for certification.
Two,
The 3C certification for explosion-proof electrical products primarily includes the following steps:
Prepare application documents
Applicants must prepare a range of documents, including but not limited to proof of corporate qualifications, product technical data, production process diagrams, and quality control system files. These documents will be used to demonstrate the applicant's ability and conditions to produce qualified explosion-proof electrical products.
Submit application and受理
The company submits the prepared application documents to the certification body. Upon receiving the application, the certification body conducts an initial review of the application materials to confirm their completeness and compliance. If the materials meet the basic requirements, the certification body officially accepts the application and sends the company an acceptance notice, specifying the specific arrangements and time points for the subsequent certification process.
3. Product Testing and Evaluation
Upon receiving the application, the certification body will organize a laboratory to conduct rigorous testing on the explosion-proof electrical products seeking certification. The testing covers various aspects such as electrical performance, explosion-proof capabilities, and environmental adaptability, ensuring compliance with the GB/T 3836 series standards. Additionally, the certification body will conduct a comprehensive assessment of the product design, production process, and quality control system to verify the company's ability to consistently produce qualified products.
4. Factory Inspection
During or after product testing and evaluation, the certification body will send inspectors to the company's factory for on-site inspections. The inspection primarily covers production environment, equipment, raw material management, process control, and finished product inspection to confirm if the company has established an effective quality management system in accordance with certification requirements and can consistently implement it in actual production.
5. Certification Decisions and Certificate Issuance
Upon comprehensive product testing, evaluation results, and factory inspections, the certification body will make the certification decision. If both the product and the company meet the certification requirements, the certification body will issue a 3C Certification for Explosion-Proof Electrical Products to the company and publish the certification information online. The certificate is typically valid for five years, during which the company must undergo regular supervision and audits to ensure the continuous stability of product quality.
6. Ongoing Supervision and Reassessment
Upon certification, the company must comply with the certifying body's requirements by regularly submitting product quality reports, production change notifications, and other documents, and must also undergo periodic factory inspections and market sampling tests. Additionally, before the certificate expires, the company must apply for a reevaluation to maintain its certification status. The reevaluation process is similar to the initial certification but places greater emphasis on assessing the company's continuous improvement and compliance maintenance.

Explosion-proof certification is a product certification designed for use in environments with flammable and explosive gases and dusts.
The product implements explosion-proof measures through various explosion-proof protection types. Common types include intrinsic safety, flameproof, positive pressure, increased safety, sealed type, and dust ignition-proof housing protection, among others.
In terms of explosion-proof protection principles, it is mainly the two methods of limiting spark energy and isolating flammable and explosive substances.
The type of explosion-proof design for the product depends on its electrical parameters, product structure, operating principle, installation method, etc.
If you happen to have products that require explosion-proof certification, feel free to consult Shenzhen ZhongNuo Testing Technology Co., Ltd. at any time.
Shenzhen Zhongnuo Testing Technology Co., Ltd. offers design, testing, and certification guidance for explosion-proof products, as well as agency services for obtaining certificates. We specialize in intrinsically safe circuit design and products, providing consulting services such as intrinsically safe design, circuit evaluation, structural design, and drawing guidance. Our successful cases include various sensors, instruments, automation equipment, and robotic products.
Feel free to send us a private message for detailed communication at any time!
explosion-proof certification application consulting service - Shenzhen Zhongnuo Testing Technology Co., Ltd.