Diamond Geological Drill Bit with Cooling & Chip Removal
Li Xiaohuan Li Zhongyong Patents and innovation
Diamond Geological Drill Bit with Anti-Slip Feature
Li Xiaohuan Li Zhongyong Patents and innovation
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
Diamond Composite Drill Bit with Bend-Resistant Concave-Convex Lip
Li Xiaohuan Li Zhongyong Patents and innovation