Specialized equipment category for stable supply of various gases used in manufacturing sites. Handles acetylene, oxygen, and argon gas supply devices for welding and cutting, high-purity gas supply systems for semiconductor manufacturing, nitrogen and hydrogen gas supply devices for heat treatment furnaces, and assist gas supply units for laser processing machines. Equipped with built-in pressure regulators, flow control valves, and safety devices to achieve appropriate gas concentration, flow rate, and pressure supply according to manufacturing processes. Unlike gas generation equipment, this is a group of devices specialized in supply and control from external gas sources.