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Inventor

YANG GUIFEN

CN8 patents
⚠️ This page may combine multiple inventors who share the name “YANG GUIFEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHANGXIN MEMORY TECH INC

7 patents

YUNNAN XIANGYUNFEILONG RESOURCES RECYCLING TECH CO LTD

1 patent