P

Inventor

ZHAO YANJUN

CN5 patents
⚠️ This page may combine multiple inventors who share the name “ZHAO YANJUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZHENGZHOU RES INSTITUTE FOR ABRASIVES & GRINDING CO LTD

3 patents

ZHAO YANJUN

1 patent

ALIBABA GROUP HOLDING LTD

1 patent