Tuam txhab Certificate
Daim ntawv pov thawj Patent
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Invention patent - hluavtaws extrusion tuag nrog kev tso tawm ruaj khov
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Utility patent - acrylic khoom pas nrig
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Utility patent - ib qho yooj yim rau nruab thiab tshem tawm frosted lampshade
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Kev siv hluav taws xob patent - lub teeb pom kev zoo acrylic teeb pom kev zoo
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Utility patent - ib tug wedge-shaped extrusion tuag
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Utility patent - hluavtaws extrusion tuag nrog kev tso tawm ruaj khov
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Utility patent - nceb zoo li hluavtaws extrusion tuag
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Utility patent - LED acrylic frosted lampshade
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Utility patent - acrylic ob-xim daim npav qhov raj