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.
Sample Requirements for Explosion-Proof Certification Application:
The sample machine submitted by the company must match the approved drawings and be fully assembled. The number of inspections should meet the requirements.
If special disassembly tools are required, they should be sent along with it.
For potting-type electrical equipment, a set of products with and without potting should be submitted each.
The transparent parts for the observation window should be sent separately in an additional 5 pieces, with at least 3.
The transparent parts of the lighting fixtures should be sent separately with at least 5 pieces, totaling 8.
The rubber aging test should provide 3 to 5 pieces of 35156 rubber blocks.
Provide 2 plastic sheets with a diameter of 150-60mm for insulation resistance testing of the plastic shell. If the size permits, the plastic shell can be tested directly.
Finished products typically require 1-2 samples.

How to understand the difference between explosion-proof and intrinsic safety explosion-proof?
These are two different types of explosion-proof protection styles.
Explosion-proof generally involves the use of explosion-proof casings for protection. The casings must have sufficient thickness and strength, so that even in the event of an explosion inside the equipment,
The flame can also be extinguished due to the width, gap, and roughness of the explosion-proof shell joint surface, igniting the external hazardous environment.
On the other hand, even in the event of an explosion in a hazardous area outside, the explosion-proof housing maintains its anti-explosion properties.
In summary, the casing is both explosion-resistant and explosion-proof. The equipment will be rather bulky.
intrinsic safety, also known as inherently safe equipment, achieved through limiting circuit energy and other means.
Safety-integrated products have higher requirements for device circuits and working power, typically suitable for handheld devices and low-power products.
Learn more about explosion-proof technology, please directly contact Shenzhen ZhongNuo Inspection Technology Co., Ltd.!

What should be noted when applying for an explosion-proof certificate?
Many clients are baffled when inquiring about obtaining the explosion-proof certification, not knowing where to start.
Here are some key points to note when applying for an explosion-proof certification for a company.
1. Product explosion-proof marking. If the customer has already confirmed the explosion-proof marking, that's good. That is the target explosion-proof marking for the product assessment.
If you haven't yet confirmed the explosion-proof marking or are unsure what an explosion-proof marking is, don't worry.
Can you introduce the product's usage locations and installation methods, or provide us with a product manual for an initial evaluation of the explosion-proof marking?
2. Can you accommodate product modifications? Many customers inquire about explosion-proof certification when their products are still in the design phase.
It can also involve modifying the products and their technical drawings based on the existing standard offerings.
This involves the issue of explosion-proof standard requirements.
Apply for the explosion-proof certificate, we can provide full technical guidance and assist in compiling certification documents throughout the process.
Streamline the process for clients to obtain explosion-proof certification with ease, efficiency, and peace of mind.
3. Offer samples and technical drawings. Customers inquiring about explosion-proof certification vary greatly in their situations.
Customers being either the buyer or the user can make it somewhat challenging to apply for a防爆 certification.
Due to difficulties in providing technical drawings and documents, it's more manageable if the client is part of the design or production side.
The customer has their own design and development capabilities, along with complete design drawings and documentation. Just ensure they can coordinate with us for sample modifications.
4. Frequent Issuers. Currently, there are a dozen or so institutions in China capable of issuing explosion-proof certificates, and the certificates from all these institutions hold equal validity.

The cost of obtaining explosion-proof certification through Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1. Do you need a防爆certificate or the防爆3C certification? If the防爆3C certification is required, a factory audit is necessary, which includes the audit fee, travel expenses for the auditor, the applying fee for the 3C certificate, and the Certificate fee.
2. Related to explosion-proof markings. Different explosion-proof markings denote different explosion-proof items, naturally resulting in varying costs.
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 audits. North American explosion-proof certification is even more expensive, over 100,000+
4. Do you need to retest? Some customers' products have never been designed for explosion-proof, and they still need to go through整改, which adds to the cost. If the product includes batteries, battery testing is also an expense, especially for those that keep failing the tests.
5. Necessary? Labs are often booked solid, often requiring a waitlist. If needed, there will be a fee involved.
Explosion Proof Certification Application Consulting Services - Shenzhen Zhongnuo Inspection Technology Co., Ltd.