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How long is the validity period of the explosion-proof certificate?

Does the domestic explosion-proof certificate have an expiration date? What is the validity period? End users of explosion-proof electrical products often face such problems. In fact, the explosion-proof certificate has a validity period. Currently, the validity period of domestic explosion-proof certificates is genera……

What documents are required to apply for an explosion-proof certificate?

The required documents for applying for an explosion-proof certificate include: 1. A copy of the enterprise qualification certificate and business license (at the time of initial inspection), a letter of authorization from the unit, or an application letter. 2. According to the provisions of GB3836.1-2000, the enterpri……