What is Auto-tuning-system?Conventional current analog control operated by manual dialing system has taken a great leap forward, resulting in digital current control through this Automatic Tuning System. By incorporating this system the welder is able to set any current value and to control even met

Top Secret: How to Choose Correct Supplier of HF Welding Machine in China ?I. IntroductionIt is a good thing that more and more customers are considering to purchase HF welding machine from China;but it is really said that most of the customers don't know how to choose correct suppliers, then custom