Ningbo Tenggong Precision Machinery Manufacturing Co., Ltd.We are professional supplier for screw forming machine at competitive price, located in Ningbo city, Zhejiang Province. our main paroducts:bolt making machine (screw machine): three station and four station bolt making machineTGBF-83S TGBF-84S TGBF-104S TGBF-133STGBF-134L TGBF-164S TGBF-204L ... Please feel free to contact to us if there is any requirements for these kinds of machines.