Efficient engineering drilling special series of drill formally launched!
Details：SANYOU | 2021-01-18
Our technician accumulated rich experience
through many years’ field operation, they finally design a series of
engineering drilling bit with high efficiency. This including ￠75，￠91，￠110，￠130，￠150，￠171 single
bits and equipped reaming shell, the drilling efficiency can reach even over
electroplated bit. Its using life is 1.5-2times over the electroplated. It is
your first choice!
