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EP-4187136-C0 - STEEL RING

EP4187136C0EP 4187136 C0EP4187136 C0EP 4187136C0EP-4187136-C0

Inventors

HE YUGUANG

Assignees

ZHEJIANG HOWHI PIPE IND CO LTD

Dates

Publication Date: 20260311
Application Date: 20200728
Priority Date: 20200728