Recommended rotary speed for different drilling work.
13
2020-04
HTT is set up in 2012 and covers the drill bit products of masonry work drills, wood work drills and metal work drills ...
27
2019-06
HTT has developed out tens of patents covering the filed of those various drill bit, drill bit packages, etc.,
27
2019-06
The OEM business is HTT main cooperation way that offers the best protections to our customers with their featured drill bit....