This certificate is issued under the China Mining Product Safety Mark Certification System, administered by the National Center for Safety Mark Certification of Mining Products (AQB).

It certifies that the product “Flameproof Electric Actuator for Underground Coal Mine (DGB-24(H))” manufactured by Huaibei Hezhong Mechanical Equipment Co., Ltd. complies with relevant Chinese mining safety standards, including GB/T 3836.1-2021, GB/T 3836.2-2021, MT/T 661-2011, and enterprise standard Q/HHZ031-2024, as well as the requirements of the mining product safety certification system.

The certification confirms that the product has passed a comprehensive conformity assessment process, including technical documentation review, type testing, factory inspection, and post-certification supervision, ensuring reliable and safe operation in underground coal mine explosive hazardous environments.

In terms of international alignment, this certification is functionally comparable to global hazardous area and mining safety systems such as:

MSHA (Mine Safety and Health Administration, USA) mining equipment safety approval system

ATEX Directive (EU 2014/34/EU) for equipment used in explosive atmospheres

IECEx system for explosive gas atmosphere electrical equipment certification

However, the MA/CMAC certification is specifically designed for coal mine safety regulation in China, focusing on explosion-proof electrical performance, underground operational safety, and equipment reliability in hazardous mining environments.

Products with this certification are officially approved for use in coal mining operations in China, ensuring compliance with national safety regulations.