PDC Drill Bits: Matumizi na Uchunguzi wa Kesi
Drilling Technology Li Zhongyong
PDC Utangulizi wa Bits za Kuchimba
Drilling Technology Li Zhongyong
Uzinduzi: Kifaa cha Kubadilisha Biti za Kuchimba cha Ubunifu
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Vifaa na Mbinu Mpya ya Kuchakata Biti za Kuchimba Yafichuliwa
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Kifaa Kipya cha Matibabu ya Maji Taka kwa Uzalishaji wa Visu vya Kuchimba
Li Xiaohuan Li Zhongyong Patents and innovation
Kipande cha Kuchimba Almasi Kilichoboreshwa: Kipengele cha Utawanyaji wa Joto Haraka
Li Xiaohuan Li Zhongyong Patents and innovation
Uzinduzi: Kifaa cha Kuchomelea Bit ya Kuchimba chenye Uwezo wa Kunyooka
Li Xiaohuan Li Zhongyong Patents and innovation
Kipande Kipya cha Kuchimba kwa Ajili ya Basalt: Njia ya Ubunifu ya Utengenezaji
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Kipande cha Kuchimba Kinachopunguza Mitetemo Chenye Muunganisho Unaonyumbulika Kimezinduliwa
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Kipande cha Kuchimba cha Almasi chenye Meno ya Mfululizo wa Corrugated Kimezinduliwa
Li Xiaohuan Li Zhongyong Patents and innovation