Functional professionalism: nitrogen purge tool is used to effectively remove impurities, argon arc welding control valve accurately controls welding gas, and nitrogen regulator stabilizes gas pressure. Cooperative workability: the three work together during the welding process to ensure the stability of the argon arc welding environment and improve the welding quality and effect. Operational convenience: the design is ergonomic, simple to operate, easy to master, and reduces the learning cost and work intensity of operators. Safety and security: it has a reliable safety mechanism to prevent gas leakage, abnormal pressure, etc., to ensure the safety of operators and equipment. Adjustment accuracy: nitrogen regulators and argon arc welding control valves can achieve precise adjustment and can accurately control gas flow and pressure according to welding requirements.