As a professional Manufacture of rebar couplers and leader of this industry in China,Hebei Yida Reinforcing Bar Connecting Technology Co.,ltd,is famous for our level-headed operation.With enormous economic capacity and more than 15 years of rapid growth development.Our company was established in 1992.We're professional in manufacturing reinforcing bar connecting couplers and machines including four series of steel bar Direct Threading Machine`steel bar rib peeling and threading machine` cold ...