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.
Classification of Explosion-proof Certification -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
Electrical equipment for explosive gas atmospheres:
Explosion-proof type d
Ex-proof type e
(3) Intrinsically Safe i
Positive Pressure Type P
(5) Immersion Type
(S6) Sand-filled type q
(7) Cast-in-place
(N) Type
2. Electrical Equipment for Combustible Dust Environments
Dust-Proof Ignition-Resistant Housing
(2) Positive Pressure Type
(3) Intrinsically Safe
Sealed Molding
3. Explosion-proof Type S
4. Composite:防爆类型 combining two or more of the above-mentioned explosion-proof configurations

Why do you need an agency to apply for an explosion-proof certificate?
Compared to directly contacting the certification body, consulting agencies can provide preliminary explosion-proof product design and modification guidance.
Ensure samples and technical drawings meet explosion-proof standards prior to inspection.
Avoided the hassle and additional costs of repeated modifications and testing.
Although the company has to pay higher consulting fees, the entire explosion-proof certification process is manageable in terms of both certification costs and time costs.
The entire certification process for the company is quite time and labor-saving.
For more details, please contact Shenzhen ZhongNuo Testing Technology Co., Ltd. directly!

Why choose tempered glass for explosion-proof transparent parts?
Transparent parts are a crucial material for explosion-proof electrical equipment. When selecting transparent parts, customers always inquire about what material should be used? Can glass be used? Can plastic be used?
Below, Shenzhen Zhongnuo Inspection Technology Co., Ltd. explains to you.
There is a clear specification in GB/T3836.1 for thermal shock testing on transparent parts, which aims to verify the thermal stability of glass under rapid cooling conditions. Currently, toughened glass is a material that not only meets this requirement but also offers a high cost-performance ratio.
To普及，tempered glass forms an even compressive stress layer on the surface after being heat-treated and then quenched. This layer counters the tensile stress that occurs on the surface during rapid cooling. Therefore, even when subjected to rapid cooling, qualified tempered glass will have a compressive stress to offset the effects of the stress induced by the rapid cooling.

Classification of Explosion-Proof Certification -- Shenzhen Zhongnuo Inspection Technology Co., Ltd.
Certification for explosion-proof is the process of verifying that equipment meets the requirements of explosion-proof standards, type testing, and routine tests, and issuing relevant qualification certificates.
Certificates are available for Ex equipment or Ex components.
Different regions have varying certification standards and systems for explosion-proof electrical products.
Currently, explosion-proof certifications internationally can be categorized into domestic explosion-proof certification, ATEX certification, IECEx certification, and North American explosion-proof certification.
Explosion-proof Certification Application Consultancy Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.