Alabọde ati kekere afẹfẹ titẹ DTH die-die
Awọn anfani tiHFDbesomi liluho
Awọn ohun elo ohun elo ti a fi ṣe ohun elo, ti o ni igbesi aye iṣẹ to gun ati pe o ga ju awọn ọja ti o jọra lọ, ati pe ohun-ọpa ti npa apata ni ipa ati irẹrun. HFD liluho die-die ni lagbara yiya resistance ati ki o dara fun liluho ni rirọ ati lile(9-grade drillability ti apata, liluho apata lile) , akawe pẹlu deede bit, paapa fun liluho 6-8 apata ite ipa jẹ pataki pataki.
