Goaltech is the strategic partner of COSL, and also the mail supplier of directional well service companies in China.

ZT-MWD has been successfully used in a very wide range including China Oilfield Services Limited (Tanggu, Zhanjiang), Daqing, Dagang, Sichuan, Jilin, Huabei, Xinjiang, Karamay, Changqing, Tuha, Qinghai, Zhongyuan, Jidong, Indonesia and Mid-east.

Our equipments and devices have been successfully sold to Canada and Mid-east, and we have become one of the most important suppliers of their local drilling service company.