DTH Hammer yog siv los ntawm ntau tus kws tshaj lij drilling ntsig txog
mining, tsim, tunneling, quarrying tej yaam num, dej zoo.
TDS Drilling tuaj yeem muab kev sib tw zoo rau koj DTH Rauj
DTH rauj3"/4"/5"/6"/8"/10"/12" .
Nta
-Long Life Span
-Txoj kev hloov hluav taws xob ntau dua
-Txoj Drilling Ceev
- Kev siv cua qis dua
-Kev siv roj tsawg
