H&H is creative designing and constructuring with full siquenced computerizing process,CAD,CAE and CAM according to customer requirments. Now we, H&H can is supply full products just-in-time from small reserching machiner to multie purpose drillrigs. included training. Our working range is water well, soil investigation, geotechnical drilling & civil construction & Drilling Accessories (DTH Hammer & Bit) and so on.