... Place of Origin:Chaozhou,ChinaUsage:auto type transformer,transformer type welding machine,welding transformers typesCoil Structure:Toroidal Coil Number: According to requirements MOQ ... , 28, 30, 33, 35, 40, 42, 50, 55, 60 EF series: EF-4539, 16, 20, 25, 32 ERL series: ERL-28, 35 ... aux-power transformer Customized designs are accepted auto type transformer welding machine CY-0017