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  <url><loc>https://kwl.tw/blog/product-level-profitability-analysis</loc><news:news><news:publication><news:name>KWL 林克威</news:name><news:language>zh</news:language></news:publication><news:publication_date>2026-08-24T00:00:00.000Z</news:publication_date><news:title>電商營收成長卻不賺錢？用單品獲利表看穿每個商品真實利潤｜林克威</news:title></news:news></url>
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