cov ntsiab lus
7 degree 108mm H22 H25 H19 taper laum pas nrig txais cov hlau zoo los tsim nrog kev kho cua sov tshwj xeeb, lawv tau siv dav hauv ore mining thiab pob zeb drilling. Xi'an tydrillbits yog ib qho ntawm taper xyaum rods chaw tsim tshuaj paus thiab exporter nyob rau hauv Suav teb.
Xi'an Tydrillbits muab hom pob zeb drilling cuab yeej, xws li taper khawm khoom, xov khawm khoom thiab laum steels, MF rods, xov rods thiab lwm yam. Yog hais tias koj xav nyob rau hauv ib yam ntawm peb cov khoom, thov koj xav tiv tauj peb los ntawm robert@tydrillbits.com ib.
