sub-quality product的用法和樣例：
例句
- With the high quality and excellent service of its products as well as the guarantee of exchanging any unqualified product, Xin Li has built good reputation among customers.
從嚴生產，從優服務，嚴格做到不合格產品不發運，不合格產品包退換的服務準則，由此樹立了品牌的良好聲譽。 - The inspector performs incoming, inprocess, fininal inspection to ensure quality products are shipped to globe customers.
負責進料檢驗，過程檢驗，出貨檢驗，確保合格產品發送至全球客戶。
