Approved by State Economic and Trade Commission with full authority on import & export business, Beijing Leeding Petroleum Equipment Co.,Ltd. is mainly engaged in the production and sales of all sorts and specifications of high-performance PDC (Petroleum Diamond Composite) drilling bits, Tricone bits, Drag bits,Hole Opener, Drill Pipe & connection, Centralizer, Safety clampls,Elevator,Slips, Tongs,Hammer union,Cement basket,Bearing and drilling machinery & equipments and accessories, which are widely used in oil & gas wells, geothermal wells, coal mines, water well ,geological exploration, Non-dig drilling and other fields. ...