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Patent Certificate

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2021-06-20
541KB
Zl202020785119.5 a fan positioning die - patent certificate.pdf
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1.27MB
Zl201922334650.0 a kind of checking tool for fan shell - patent certificate.pdf
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1.28MB
Zl201922167244. X a roof fan with adjustable air volume - patent certificate.pdf
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1.27MB
Zl201922101894.4 one type air valve - patent certificate.pdf
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1.49MB
Zl201821463715.0 a fan shutter - patent certificate.pdf
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2021-06-20
49KB
A special mold to ensure the quality of product processing and improve the effic
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1.23MB
2019306809348 wind turbine with swept curved blades - patent certificate.pdf
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1.27MB
2019223346500 a checking tool for fan shell.pdf
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1.27MB
2019221018944 a kind of air valve - patent certificate.pdf
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502KB
2019207201527 patent certificate for a simple wind tube installation structure (2).pdf
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