Specialized category for on-site gas generation equipment that stably produces various gases at manufacturing sites. Handles main equipment including nitrogen gas generators, oxygen gas generators, hydrogen gas generators, and argon gas generators, along with products categorized by generation principles such as PSA method, membrane separation method, and electrolysis method. Provides gas generation functions directly connected to manufacturing processes including protective gas supply for welding and cutting operations, atmosphere gas generation for heat treatment processes, high-purity gas supply for semiconductor manufacturing, and nitrogen filling for food packaging. Distinguished from cylinder supply systems and gas piping facilities, targeting only equipment specialized in gas generation functions.