... , copper etc, and fit for acid, alkaline etc. Electrode welder ZX7 SerialMain features:l Adoption of PWM & PFM control ... etc, and fit for acid, alkaline and cellulose type electrode.l Suitable for processing of metal for the industry: ... industry, foodstuff, medicine, environment – protection and decoration etc.Electrode welder ZX7 -200TTechnical parameters:Input voltage (V): 220Rated input frequency ...