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A Cleaning Device for Door and Window Processing - Utility Model Patent Certificate
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A Sealing Strip for Thermal Break Aluminum Casement Window - Utility Model Patent Certificate
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A Fixing Device for Door and Window Processing - Utility Model Patent Certificate
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A Fixing Device for Door and Window Processing - Utility Model Patent Certificate
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A door and window cutting device - Utility Model Patent Certificate
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An Integrated Multi-Cavity Thermal Break Insulation Strip - Utility Model Patent Certificate
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A hydraulic super-efficient corner crimping machine for aluminum doors and windows - Utility Model Patent Certificate
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A fully automatic end face milling machine for aluminum profiles - Utility Model Patent Certificate
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A polishing device for the production of wooden fire doors - Utility Model Patent Certificate