guaranteed quality的用法和樣例：
例句
- Our products are always as good as the samples we send .I can promise there will be not debasement of quality.
我們的產品一定和送給你們的樣品一樣好，我保證品質絕對不會降低。 - Shuanghui can provide a large number of various fresh meat products to ensure quality, a large quantity of Cong.
可大量提供雙匯各種生鮮肉制品，保證品質，量大從優。
