Shenzhen ZhongNuo Technology Co., Ltd. offers consultation services for applying for qualifications in explosion-proof electrical installation, maintenance, and maintenance.
The validity period for the Installation, Maintenance, and Inspection Manual of explosion-proof electrical equipment is 3 years. After expiration, please consult and apply to Shenzhen ZhongNuo Testing Technology Co., Ltd. for renewal.
Different institutions have varying application processes and requirements; some offer online training and exams, while others require on-site training and evaluations.
Customers may choose the appropriate certificate based on their actual situation and needs.

If employees leave, they cannot take the certificate with them.
Generally, it is recommended that employees with long-term stability attend the SNOR test.

Below, Zhongnuo Inspection will briefly explain the application process and requirements; for your reference only.
Frequent Institution: Nanyang Explosion-Proof Institute
Certificate Validity: 3 years; a new application is required upon expiration.
Application Method: Offline Training and On-Site Assessment
Application Requirements: Apply in the company's name; certificates include company certificates and individual certificates.
Training Period: 1.5 days
Documentation Preparation: ISO9001 system, equipment list, calibration certificates, operation manuals, etc. (Approximately 20-30 technical documents available, samples can be provided and written upon request.)
Scope of Service: Customers can select one, two, or all three of the following terms—installation, maintenance, and repair—based on their needs. The chosen scope of application varies in cost and required documentation.
On-Site Audit: For offline training, the instructor can conduct technical and on-site evaluations; for online training, a video evaluation is required. If the evaluation is not passed, the company must make corrections. Specific evaluation guidelines are available.
ZhongNuo Consulting Services Advantages: Full assistance with application, including technical document preparation, on-site evaluation, process coordination, etc.

All explosion-proof electrical equipment installation, maintenance, and training manuals applied for at ZhongNuo Inspection are indeed valid.
Customers only make payments after verifying the authenticity, ensuring their interests are protected.
The process for applying for an explosion-proof electrical equipment installation, maintenance, and repair certificate is not simple. The customer only needs to provide information about the company and its employees.
Attend a 2-day training session within the training dates and take the exam. After the exam, simply mail your test papers back to ZN Testing.
ZhongNuo Inspection will compile all relevant explosion-proof safety technical documents and explosion-proof safety management documents throughout the enterprise process. Application is simple and convenient!
Application Process and Consultancy Services for Qualification Certificate of Installation, Maintenance, and Repair of Explosion-Proof Electrical Equipment - Shenzhen Zhongnuo Technology Co., Ltd.




































