国产成人精品在线-国产成人精品综合-国产成人精品综合久久久-国产成人精品综合在线-天天做日日爱夜夜爽-天天做日日干

Latest requirements for applying for coal safety certification for mining equipment using lithium-ion batteries

According to the minutes of the 2022 Mining Product Explosion Protection Technology Seminar, there are several requirements for the use of lithium-ion batteries in mining equipment, including: 27. Req……

View details+

The new version of coal safety certification and mining safety certification product catalog will be implemented on December 10, 2022

On September 15, 2022, the "Notice of the National Mining Safety Supervision Bureau on Issuing the Catalogue of Mining Products Subject to Safety Mark Management" (Mining Safety [2022] No. 1……

View details+

Product requirements for applying for coal safety certification in OEM mode

1. The applicant for safety signs is the production unit. Except for OEM production, please use the ……

View details+

Implementation Plan for Replacing Coal Safety and Mine Safety Certificates According to the New Explosion proof Standards

On May 1, 2022, the GB/T 3836-2021 series of standards for explosive environments (hereinafter referred to as the new version of explosion-proof standards) officially came into effect. The National Ce……

View details+

The relevant regulations of the National Safety Standards Center for OEM mode enterprises to apply for coal safety certification

To standardize the management of safety signs for mining products produced by OEM and strengthen process control, this rule is formulated. The review and issuance of safety signs for OEM products shou……

View details+

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……

View details+

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……

View details+

Method for Querying Coal Safety Certification Certificates

Many customers do not know how to query or search for the authenticity of coal safety certification and mining safety certification products. Especially when customers are looking for products with co……

View details+

Can I apply for coal safety certification in OEM mode?

Many customers say they don't have a production factory and ask if they can apply for coal safety certification? Prior to this, the regulations of the National Safety Standards Center were that only p……

View details+

The difference and connection between coal safety certification and mine safety certification

Coal safety and mining safety certification, abbreviated as MA/KA certification, is a unique safety mark certification system in China that must be obtained for equipment and products used in coal min……

View details+