Hebei Yida Reinforcing Bar Connectiong Technology Co;Ltd. China top level-headed &professional manufacturer of rebar coupler and upset forging machine.Parallel thread cutting machine,thread rolling machine and taper thread cutting machine.Could extrusion machine ,steel bar hydraulic grip machine,cutting tool,rollers as well as anchor plate since 1992.Passed ISO9001:2008 strictly quality control system and met the requirement of general technical specification for mechanical splicing of bars JGJ107-2003.Annual coupler production capacity reachs 15 million pcs.