Patent Certificate

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2021-06-20

497KB

2019207175132 patent certificate of a combined ventilation pipe (2).pdf

pdf

2021-06-20

500KB

2019207097218 patent certificate of an efficient fan shutter.pdf

pdf

2021-06-20

1.23MB

201930680934.8 patent certificate of wind turbine with swept and bent blades.pdf

pdf

2021-06-20

1.28MB

201922167244x a roof fan with adjustable air volume - patent certificate.pdf

pdf

2021-06-20

1.27MB

201921349774x patent certificate for a kind of wind turbine assembly tooling.pdf

pdf

2021-06-20

521KB

201920721618 patent certificate of a roof fan with adjustable air volume (3).pdf

pdf

2021-06-20

564KB

201821462531.2 a fan component - patent certificate.pdf

pdf

2021-06-20

1.55MB

201820834126.2 a new animal husbandry fan blade and animal husbandry fan including the fan blade.pdf

pdf

2021-06-20

862KB

201721886818.3 a kind of animal husbandry fan with embedded steel structure - Certificate.pdf

pdf

2021-06-20

880KB

201721886756.6 a kind of fan that can prevent the wind wheel from turning and shifting.pdf

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