Patent Certificate
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Invention patent - a synthetic extrusion die with stable discharge
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Utility patent - an acrylic solid rod
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Utility patent - an easy to install and remove frosted lampshade
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Utility patent - a high light transmittance acrylic lampshade
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Utility patent - a wedge-shaped extrusion die
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Utility patent - a synthetic extrusion die with stable discharge
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Utility patent - a mushroom shaped synthetic extrusion die
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Utility patent - an LED acrylic frosted lampshade
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Utility patent - an acrylic two-color card slot tube