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.
The process of applying for an explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd.
1. Conduct product assessment and provide an initial quote for the requested product. Evaluate the product using the company's product specification, electrical schematics, and component list, determining the appropriate type of explosion-proof certification suitable for the product and offering an initial quote.
2. Offer samples for testing at the lab; the quantity of samples required varies depending on the product category.
3. Provide documentation list review
Application documents, including the applicant's basic information and product details
(2) Technical documents, including the submitted technical materials by the company, such as corporate standards or technical requirements, product drawings, user manuals, etc.
A. Company Standard/Technical Requirements: The company standard/technical requirements for products should be written in accordance with the specified format. The content should include not only the performance requirements of the product but also related aspects of explosion-proof: such as basic parameters, explosion-proof markings, operating environmental conditions, explosion-proof performance requirements, relevant tests for explosion-proof performance, and markings related to explosion-proof.
B. Product Drawings - When an enterprise applies for a explosion-proof certification for intrinsically safe electrical equipment, it should provide assembly drawings, circuit diagrams, printed circuit board diagrams, silk-screened diagrams, material lists of components, and label drawings, etc. For non-intrinsically safe electrical equipment, the technical documents submitted for inspection should include drawings that reflect the explosion-proof performance of the sample (including assembly drawings and component drawings). If the assembly drawing can clearly indicate the explosion-proof parameters and structure of the product, only the assembly drawing needs to be submitted for inspection.
C. Instruction Manual - The instruction manual should include basic parameters, explosion-proof markings, product外形 diagram, installation, maintenance, order instructions, and clear warnings to the user regarding the importance of ensuring the product's explosion-proof performance during installation and use.
D. Other Information: For products with adhesive bonding or casting, provide the model names, performance descriptions, and relevant process documents of the adhesive and casting agents. For products with plastic casings, provide the material of the plastic and corresponding performance documents.
4. Certificate of Origin

What's the difference between obtaining the ATEX certification and the Coal Mine Safety Certification for products?
intrinsic safety certification, also known as intrinsic safety explosion-proof certification.
In the explosion-proof industry, there are various types of explosion-proof protection, including separation type, intrinsically safe, increased safety, positive pressure, and sealed type, etc.
intrinsic safety is just one type of explosion-proof design; equipment utilizing this type of explosion-proof design is used in explosive areas.
Due to the restrictions on its working voltage, current, capacitance, inductance, etc.
Even if sparks are produced within the circuitry, they are insufficient to ignite the surrounding explosive environment, making it inherently safe.
The Intrinsically Safe Certification is widely applied to low-power, energy-efficient instruments, handheld terminal products, and similar devices.
Coal Mine Safety Certification is a mandatory safety certification for equipment used underground in coal mines.
Due to the presence of explosive substances like methane in coal mine shafts, electrical equipment used underground must be equipped with protective measures to ensure explosion-proof performance.
Select the appropriate explosion-proof protection type, such as intrinsically safe, flameproof, and encapsulation, based on product structure, electrical parameters, installation method, and usage area.
It's worth noting that electrical equipment applying for the Coal Mine Safety Certification must not only possess explosion-proof capabilities but also meet performance tests for the special environment underground in coal mines.
ChinaNo Inspection has long focused on explosion-proof certification and coal safety certification, well-versed in certification standards.
Familiarity with the explosion-proof design, modification, testing, certification, and factory audit processes and requirements can facilitate a company's swift acquisition of explosion-proof and coal safety certifications.

What is an explosion-proof electrical installation qualification? How to obtain an explosion-proof installation qualification?
Certification for explosion-proof electrical equipment installation, maintenance, and repair training is one of the qualifications for companies in the field of explosion-proof electrical installation and construction.
Many clients engaged in installation and construction in explosive environments seek to obtain such a certificate.
ZheNuo Inspection provides a brief overview of the application process and requirements.
Currently, explosion-proof installation qualification certificates are issued by different authorities, with varying names, certificate samples, and application requirements.
But primarily through training + examination methods, including company and employee certifications, with training standards based on the GB/T 3836 series.
As the applicant company through our agency, ZhongNuo Inspection has cumulatively obtained the relevant certificates for hundreds of client enterprises.
We schedule 1-2 training sessions and exams monthly, providing full assistance with the preparation of necessary documents and files.
Save time and costs for a wide range of corporate clients, with certificates that are authentic and traceable.
We can also offer certificate processing services for our clients.
Feel free to message us anytime if you have a need for this!

How to Apply for Explosion-Proof Certification for Companies:
1. Self-Application: The company applies to the certification body independently, prepares relevant documents on its own, assists in debugging the prototype independently, and modifies parts of the documents that are not in compliance. The process is relatively longer, with higher overall costs, and it takes both time and effort.
2. Agent Application: It refers to the entire consultation and application process with Shenzhen ZhongNuo Inspection Technology Co., Ltd., including material revisions, prototype debugging, and progress coordination, which are entrusted to the consulting agency, ensuring a smooth progress. Fast certificate acquisition, manageable overall costs, and time-saving with minimal effort.
Explosion-proof Certification Application Consultation Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.