Hebei Yida Reinforcing Bar Connecting 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, cold extrusion machine ,steel bar hydraulic grip machine ,cutting tool, rollers as well as anchor plates since 1992, passed ISO 9001:2008 strictly quality control system and met the requirement of "General Technical Specification for mechanical splicing of bars"(JGJ107-2003).annual coupler production capacity reaches a leap from 120,000 to 15 million pcs. Performance great by numerous of Important &National Projects,like Pakistan Karachi Nuclear Power Plant, Guinea Hydro power Plant, HK-Macao-Zhuhai longest Cross sea bridge, Ivory Coast Soubre Hydropower Station, and so on.