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.
If you have any questions or needs regarding ATEX certification, please feel free to consult Shenzhen Zhongnuo Testing Technology Co., Ltd.

What's the difference between corrosion protection level, protection level, and explosion-proof certification level?
Many corporate clients are often confused about the corrosion resistance, protection class, and explosion-proof certification levels required for their products.
Due to the fact that there is only a one-character difference in the names, and both refer to a certain grade of the product, they are similar yet different. So, what are the differences between them?
Corrosion prevention involves measures taken to protect metals prone to rust, with the aim of extending their lifespan. Typically, methods like physical, chemical, and electrochemical corrosion prevention are used. There are five common levels: indoor F1, F2, and outdoor WF, WF1, and WF2.
Protection rating, commonly known as IP rating, refers to the dust and water resistance level of the equipment, typically composed of "IP" followed by two digits. Explosion-proof rating generally refers to the equipment's explosion-proof certification level. Each electrical equipment applying for explosion-proof certification will have a corresponding explosion-proof mark, including the explosion-proof type and level.
The explosion-proof grade refers to the application of the product in explosion-proof areas, gas/dust groups, temperature groups, and equipment protection levels.
Clearly, these three concepts belong to different fields. For more information, please feel free to consult Shenzhen Zhongnuo Inspection & Technology Co., Ltd. at any time!

What standards are used for testing and certification of explosion-proof electrical equipment?
Firstly, it's important to distinguish whether the product requires certification or the on-site location needs explosion-proof electrical testing.
On-site explosion-proof electrical equipment testing is conducted in accordance with the provisions of AO3009-2007 standard, which requires at least one regular testing of the equipment in use every 3 years.
Provide a testing report. This is primarily for the users of explosion-proof equipment.
Product testing and certification generally refers to conducting relevant tests on newly launched products in accordance with the GB/T 3836 series standards.
The process of obtaining the explosion-proof certification. This requires providing product design drawings, manuals, and other documents.
Generally, it is for the manufacturer or supplier of the equipment.
ZhongNuo Inspection specializes in explosion-proof testing and certification for many years.
Offer product design, testing, certification, on-site testing, and construction modification services.
Offer customized explosion-proof technology and standard consulting services, with numerous collaboration cases. Welcome to send us a private message.

The cost of obtaining explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1.防爆 certification or防爆 3C certification? If it's the防爆 3C certification, a factory audit is required, which includes the audit fee, travel expenses for the auditor, and the application fee and Certificate fee for the 3C certificate.
2. Related to explosion-proof markings. Different explosion-proof markings correspond to 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 costly, over $100,000+
4. Do you need to retest? Some customers' products haven't undergone explosion-proof design at all, and they still need to be modified, which adds to the cost. If the product also includes batteries, battery testing is an additional expense, especially for those batteries that keep failing the tests.
5. Needed or not. Labs are often booked solid, and there's often a waiting list. If needed, there will be a fee involved.
Explosion-proof Certification Application Consulting Services - Shenzhen Zhongnuo Testing Technology Co., Ltd.