Profile : JTHL is in 2004 year, the main workshop located in Beijing. The branch workshop located in Shouguang city, Shandong province, China. Our company mainly produces and sells rotary Kelly Bar, drill tools and rotary drilling rigs maintenance, sales of the complete drilling rigs and rotary drill rigs spare parts supply. The production of Kelly Bar has a number of independent research and development patents that use domestic and foreign technology and materials, with high strength, light weight, high wear resistance, reliable quality and other excellent characteristics. Drilling tools are available in a variety of series and specifications to meet different customer needs. Used drilling rigs and spare parts complete, good quality, reasonable price, and domestic logistics company cooperation, timely supply service.