Amavalvu entambo yokubhoboza avimba uketshezi ukuthi lungagelezi ngentambo yokubhoboza njalo uma i-drill ikhahlela nge-bit off bottom. I-LANDRILL ingahlinzeka nge-valve yokuphepha yokuvula okugcwele (FOSV), i-Kelly valve, i-Inside Blowout preventer (IBOP), i-Drop-in check valve, i-Float valve.
Uphenyo
5-1203, Indawo Yezimboni yaseDahua, No.2 Yunshui Road, indawo yokuthuthukiswa kobuchwepheshe obuphezulu, eXi'an, 710065, eShayina 
86-13609153141
