Which products need explosion-proof certification?

Explosion-proof electrical products such as explosion-proof motors, explosion-proof electrical appliances, explosion-proof lamps, explosion-proof instruments and meters, explosion-proof communication equipment, explosion-proof transport vehicles, explosion-proof mechanical equipment (such as explosion-proof elevator and explosion-proof crane) need explosion-proof certification by CQST according to the Chinese national standard GB3836 series.

It is ok to apply for an explosion-proof certificate, but there are some problems to pay attention to:

1. Which company is the holder of the certificate, that is, is the company name on the certificate your company or a foreign company? If it is your company, you must have the authorization document of the foreign company, authorizing you to use the drawings of the foreign company.

2. Are foreign companies willing to give your company the drawings? If not, foreign companies can directly hand them over to consulting companies.

3. Have the products of foreign companies obtained explosion-proof certificates abroad? If they already have foreign certificates, it is better to provide them, so that they can get the domestic explosion-proof certificate faster.

4. After the above issues are implemented, authentication documents are required: drawings, instructions and calculation sheets. Among them, the calculation book should be written by the designer according to the explosion-proof standard clauses. I wonder if any technicians in your company have written this thing. Generally, you will find a consulting company to write it for you, just like applying for a patent, you will find an agency to write a patent specification for you.