Diamond Drill Bit Production: Advanced Electroplating Device
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Diamond Geological Drill Bit Tip Grinding Device
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Diamond Drill Bit: New Efficient Manufacturing Method
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
A high-speed drilling bit
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Diamond Drill Bit Grinding Device for Water Injection Channels
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
High-Strength pdc Drill Bit: Manufacturing Method
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Corrosion-Resistant, Wear-Resistant Geological Drill Bit & Manufacturing Method
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao
Composite Geological Drill Bit with Anti-Sand Blocking Features
Li Zhongyong Patents and innovation Zou Chao
Diamond Composite Drill Bit with Bend-Resistant Concave-Convex Lip
Li Xiaohuan Li Zhongyong Patents and innovation
New Cleaning Device for Geological Drill Bit Production
Li Xiaohuan Li Zhongyong Patents and innovation Zou Chao