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Utility Model Patent Certificate for a Window Opener with Stable Window-Opening Performance (Patent No. 2024215530989)

Utility Model Patent Certificate for a Window Opener with Stable Window-Opening Performance (Patent No. 2024215530989)

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No. 600 Qushan Road, Dongcheng Subdistrict, Linqu County, Weifang City, Shandong Province, China

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