残次品

dāng xīn bié ràng tā bǎ cán cì pǐn mài gěi nǐ

当心别让他把残次品卖给你。

Make sure he doesn't try to palm you off with faulty goods.

wǒ men yīng gāi bǎ zhè xiē cán cì pǐn tuì huí chǎng jiā

我们应该把这些残次品退回厂家。

We should send these goods with defects back to the manufacturer.