Explosion proof design delves into every detail. To prevent sparks from mechanical collisions, moving parts are often made of special non-ferrous metal alloys, stainless steel, or anti-static polymers to avoid direct collisions between iron materials. Structurally, ensure that there is no metal friction between the piston and the end cap, and between the piston rod and the guide sleeve. At the same time, the overall design considers electrostatic discharge to ensure reliable grounding of the casing and prevent charge accumulation. All fasteners may also be specially designed to prevent sparks from being generated by the impact of installation tools.