Kev tswj lub luag haujlwm muaj ob pawg ntawm kev tswj hwm sab hauv thiab kev tswj hwm sab hauv, pib tswj lub zog loj, pib tswj cov cua sov.
Nco tseg:Internal control only used in situations of commissioning, troubleshooting, and invalid external control. Normally use external control for the welding machine.





