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Coal Mine Mark Certification (MA, KA certification for short) is a mandatory certification implemented by the National Coal Mine Safety Mark Office for underground coal mine supplies. All products listed in the mining product safety certification catalog must obtain a certification certificate. Applying for coal safety certification must be based on relevant national and industry standards. Below are some coal safety certification standards for reference, and the latest standards are subject to those issued by the state.

1. MT238.3-2006 Cantilever Excavator Part 3: General Technical Conditions

2. MT/T81-1998 Type Inspection Specification for Drum Coal Mining Machine

3. MT/T82-1998 Factory Inspection Specification for Drum Coal Mining Machine

4. MT/T84-1997 Drum coal mining machine type and basic parameters

5. MT/T105-2006 General Technical Conditions for Scraper Conveyor

6. MT/T106-1996 General Technical Conditions for Scraper Transfer Machine for Shuncao

7. MT/T493-1995 General Technical Parameters for Crushers Used in Shuncao

8. MT312-2000 Hydraulic Support General Technical Conditions

9. MT550-1996 Technical Conditions for High Mining Height Hydraulic Support

10. MT/T555-1996 Technical Conditions for Hydraulic Support with Large Tilt Angle

11. MT/T989-2006 General Technical Conditions for Mining Explosion proof Diesel Engine Trackless Rubber Wheel Vehicles

12. MT491-1995 General technical specifications for explosion-proof battery electric locomotives in coal mines

13. GB3836.1-2000 Electrical Equipment for Explosive Gas Environments Part 1: General Requirements

14. GB3836.2-2000 Electrical equipment for explosive gas atmospheres Part 2: Explosion proof type "d"

15. GB3836.3-2000 Electrical equipment for explosive gas atmospheres Part 3: Increased safety type: “e”

16. GB3836.4-2000 Electrical equipment for explosive gas atmospheres Part 4: Intrinsic safety type "i"

17. GB4208-93 Degrees of Protection Provided by Enclosures (IP Code)

18. GB14048.1-2000 General Principles for Low Voltage Switchgear and Nuclear Control Equipment

19. MT/T661-1997 General Technical Conditions for Electrical Equipment Used in Coal Mines Underground

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