we have produced series kindly of stud welder which has same functions with US or German Nelson stud welder , KOCO , Taylor stud gun . Meanwhile , we have our special advantages for that . We manufacture many kinds of welding studs , insulation pin , arc studs for different material , no matter SS304 , copper plated or AL . Also with ceramic ferrules , we could make it according to your drawings or samples if you have any special demands for that . That?s why we had sell them well both in China and foreign country , including Malaysia , Australia, Singapore, Iran, Indonesia, American and so on .