Qhov chaw ntawm Keeb Kwm: Suav teb Hom Lub Npe: JCDRILL Model Number: QW TW TWU Hom: Drilling cuab yeej Khoom siv: Hlau Siv: Mining, Kev Tsim Kho, Geotechnical, Kev Tshawb Fawb Lub npe: Rod Wrench