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.
Shenzhen Zhongnuo Inspection & Testing Technology Co., Ltd. is a specialized safety consulting firm with extensive certification experience and a skilled technical team. We are well-versed in industry standards and requirements, and we offer services ranging from safe circuit design and modification of product drawings, to certification applications and factory inspections for businesses.

To obtain the safety certification, a series of documents are required, including product manuals, corporate standards, electrical schematics, block diagrams, PCB layouts, assembly drawings, battery specifications (if applicable), potting process documents (if applicable), wireless transmission power reports (if applicable), and material reports for the casing (if applicable).

Are product explosion-proof certification and explosion-proof qualification certificate the same?
Many customers inquire during consultations about the difference between applying for explosion-proof certification and an explosion-proof qualification certificate.
Blast-proof certification and blast-proof compliance certificate are two distinct concepts. Once a product undergoes blast-proof certification, it is issued a blast-proof compliance certificate.
Blast-proof certification is the process, and the blast-proof certificate is the result. So when the client says "product with blast-proof certification" or "product with a blast-proof certificate,"
The product must pass the explosion-proof standard tests and meet the standard requirements to obtain an explosion-proof certification.
Explosion-proof certifications can be categorized according to different protection types, such as intrinsic safety, flameproof, positive pressure, and encased types.
ZhongNuo Inspection boasts a team of explosion-proof engineers who can provide early-stage design services for explosion-proof circuits and structures.
Assist companies in compiling the necessary drawings, documentation, and specifications, such as enterprise standards, for explosion-proof certification, helping them obtain the explosion-proof qualification certificate.
If you require certifications in this area, feel free to message us directly!

What is a防爆合格证 for security? What are the requirements for applying for a security explosion-proof certificate?
The explosion-proof equipment primarily ensures safety by controlling the electrical parameters of the device circuit and limiting the energy of the entire circuit to meet the explosion-proof requirements.
Key measures include reducing voltage and current, and controlling parameters of energy storage components such as inductors and capacitors.
The design reference standards are GB/T3836.1 and GB/T3836.4.
Customers applying for the explosion-proof certification need to provide electrical schematics, block diagrams, PCB layouts, numbering diagrams, product assembly drawings, and manuals.
Company standards and related materials.
Recently handled products include temperature vibration sensors, remote transmitters, monitoring devices, Bluetooth beacons, walkie-talkies, etc.
All explosion-proof certificates are of intrinsic safety type.
If you also have products that require ATEX certification for explosion-proof safety, feel free to send us a private message!
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.