Patent Certificate

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pdf

2021-06-20

541KB

Zl202020785119.5 a fan positioning die - patent certificate.pdf

pdf

2021-06-20

1.27MB

Zl201922334650.0 a kind of checking tool for fan shell - patent certificate.pdf

pdf

2021-06-20

1.28MB

Zl201922167244. X a roof fan with adjustable air volume - patent certificate.pdf

pdf

2021-06-20

1.27MB

Zl201922101894.4 one type air valve - patent certificate.pdf

pdf

2021-06-20

1.49MB

Zl201821463715.0 a fan shutter - patent certificate.pdf

xlsx

2021-06-20

49KB

A special mold to ensure the quality of product processing and improve the effic

pdf

2021-06-20

1.23MB

2019306809348 wind turbine with swept curved blades - patent certificate.pdf

pdf

2021-06-20

1.27MB

2019223346500 a checking tool for fan shell.pdf

pdf

2021-06-20

1.27MB

2019221018944 a kind of air valve - patent certificate.pdf

pdf

2021-06-20

502KB

2019207201527 patent certificate for a simple wind tube installation structure (2).pdf

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