The entire process for obtaining CCC certification for explosion-proof electrical equipment covers five core stages: business liaison, document review, type testing, factory inspection, and certificate issuance, ensuring safe and compliant operation in explosive environments.

1. Business Coordination and Quotation

1. Receive the product technical documentation provided by the customer and conduct a comprehensive quotation based on the applicable explosion-proof types (such as flameproof type d, intrinsic safety type i, etc.) and the requirements of GB/T 3836 standards.

2. Both parties confirm the cooperation details, sign the certification contract, and the client pays the contract deposit.

II. Data Filling and Preliminary Review

1. Assist customers in filling out the explosion-proof certification application form, clarifying key information such as product model, explosion-proof marking, and applicable environment.

2. Conduct professional review of product technical documentation, including design drawings, BOM tables, manuals, etc., to assess compliance with standards.

3. Ineligible documentation: The client must resubmit the documents after rectification as required until they meet the standards.

4. Qualified materials: Proceed to the sample preparation stage.

III. Testing and Inspection

1. The customer prepares inspection samples in accordance with the drawing requirements (2-3 units for standard products, additional units for special products as per standards).

2. The samples are sent to a nationally accredited laboratory for comprehensive testing in accordance with the GB/T 3836 series standards, including pressure resistance of the enclosure, electrical safety, environmental adaptability, and intrinsic safety parameter limits.

3. Test Passed: Issue the explosion-proof certificate and inspection report, then proceed to the factory audit stage.

IV. Factory Inspection

Conduct on-site factory inspections for mass-produced products to verify the quality system, production processes, consistency of key components, and configuration of testing equipment.

2. Factory audit approved: Proceed to the report issuance stage.

3. Factory audit qualified but with corrective actions: After the client submits the corrective measures and passes the review, the factory re-enter the audit result confirmation.

V. Final Payment and Certificate Issuance

Issue the on-site factory audit report and receive the final certification payment from the client.

2. After the certification body's review is approved, the explosion-proof certificate and related documents will be officially issued, with a typical validity period of 5 years, and strict compliance with post-certification supervision requirements is mandatory.

6. Annual Surveillance Review After Certification

Shenzhen Zhongnuo Testing provides guidance and consulting services for the annual surveillance review of Explosion-Proof 3C Certification.

To obtain the explosion-proof 3C certification, enterprises can entrust Shenzhen Zhongnuo Testing Technology Co., Ltd（STS）. with the agency. We offer comprehensive one-stop agency services for explosion-proof 3C certification, including explosion-proof design and rectification guidance, assistance in preparing drawings and documents, process agency, and factory review guidance. Feel free to reach out to us anytime for further communication!