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Validity period of coal safety certification safety mark certificate

(1) Conventional products. The validity period of safety signs is generally 5 years; (2) New product……

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Explosion proof marking instructions for Ex equipment used in explosive gas environments according to GB/T 3836 standard

The new version of GB/T3836 series standards has been officially implemented on May 1, 2022. The difference between the old and new standards is a concern for many corporate customers. The explosion-p……

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List of the latest GB/T3836 series explosion-proof standards currently in use

Recently, many customers have been inquiring about the date of the new version of the explosion-proof certification standard GB/T3836. Zhongnuo Testing would like to inform everyone that the new versi……

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Material requirements for metal shells and shell metal components for explosion-proof certification

8 Metal shells and metal components of shells 8.1 Material composition The materials of the shells o……

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Basic requirements for the safety of explosion-proof electrical equipment in hazardous areas | Explosion proof testing

Installing and using explosion-proof electrical equipment in hazardous and explosive areas is the most basic requirement for safety. But what issues should be noted when selecting and installing explo……

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Technical requirements for explosion-proof certification of explosion-proof enclosures for Ex components

Appendix D (Normative) serves as the explosion-proof enclosure for Ex components D.1 General Provisions. The purpose of issuing explosion-proof certificates for Ex components is to enable manufacturer……

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Catalogue of Explosion proof CCC Certified Products | Explosion proof 3C Certification Processing Institution

1、 The latest explosion-proof CCC certification product catalog is divided into the following 17 cat……

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Material requirements for non-metallic shells and non-metallic components in explosion-proof certification

7 Non metallic shells and non-metallic components of shells 7.1 General rules 7 1. Scope of applicat……

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Basic requirements for batteries and battery packs in explosion-proof electrical equipment

Battery is one of the main power supply methods for explosion-proof electrical equipment, and it is also a technical difficulty that customers often encounter during the explosion-proof testing and ce……

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Main content description of the new version of the safety mark certificate for mining products

The main content of the new version of the mining product safety mark certificate includes: certificate name, certificate category mark, safety mark number, QR code, certificate holder, registered add……

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