1.Aviation aluminum with special 3.Compared with ordinary copper copper protection cups, it is more to higher temperatures, more and has a longer service life. 2.Effectively solve the difficult problem of welding slag cleaning. Make welding nanny sticky slag, save time and . 4. and high quality. Electrode clip for the copper material, a very small amount of impurities, especially phosphorus, , aluminum, etc., greatly reduce the copper conductivity., Manufacturer: Ounfhtrttk