GB 3836.1-2010 Explosive environments Part 1: Equipment, General requirements specify general requirements for the construction, testing and marking of electrical equipment and Ex components used in explosive gas environments. This standard applies to equipment used in hazardous locations where explosive gas environments are present and covers safety requirements for equipment in the -20 ° C to + 60 ° C Temperature range, 80kPa to 110kPa pressure range, and 21% standard oxygen content in air. The standard describes in detail various types of explosion protection, including flameproof enclosures, intrinsically safe and positive pressure enclosures, etc. In addition, this standard emphasizes the importance of assessing and preventing possible sources of ignition of equipment, providing necessary guidance and safety guarantees for equipment design and use.