st 6 machines at the same time. 60% labor cost saving because of its high efficiency. Coiling nails efficiency gains at least 50% with a high-frequency welding machine as each nail is quality product without stuck and stop, even if in the speed of 1900 nails/min, coiling speed can improve 30%, so that can reduce 40% labor cost.7.?High quality?nails:?Detective rate is very low,?which is 1/100000, improve the efficiency of coil nail collating and paper strip nail making machine, far different