... alibaba onsite check supplier 2,world-advanced devices 3, durable parts 4. easy to operate well drilling rigs 1,parameterDrilling ... ,16.7 2,usesit is traditionally used in china for construction and agriculutural drilling work,which is expecially used ... for water well drilling work. 3,features1no polution,no noise2,competitive prize3,famed brand4authentic parts for long use