The mandatory certification standards for explosion-proof electrical products were released on October 11, 2021 and implemented on May 1, 2022. The latest execution standards for explosion-proof 3C certification are as follows:

GB/T 3836.1-2021 Explosive environments Part 1: General requirements for equipment
GB/T 3836.2-2021 Explosive atmospheres - Part 2: Equipment protected by explosion-proof enclosures "d"
GB/T 3836.3-2021 Explosive environments Part 3: Equipment protected by increased safety "e"
GB/T 3836.4-2021 Explosive environments Part 4: Equipment protected by intrinsic safety type "i"
GB/T 3836.5-2021 Explosive environments - Part 5: Equipment protected by positive pressure casing "p"
GB/T 3836.6-2017 Explosive environments - Part 6: Equipment protected by liquid immersion type "o"
GB/T 3836.7-2017Explosive environments - Part 7: Equipment protected by sand filled "q" molds
GB/T 3836.8-2021 Explosive environments - Part 8: Equipment protected by type "n"
GB/T 3836.9-2021 Explosive atmospheres - Part 9: Equipment protected by pouring type "m"
GB/T 3836.31-2021 Explosive environments - Part 31: Equipment protected by dust ignition proof enclosure "t"