Chinese phrase
保质期多久？ bǎo zhì qī duō jiǔ
Meaning
How long is the shelf life?
When to use it
Asks how long a product stays usable before it expires. It is a neutral question about storage time, often used for food and other products.
Example dialogue
你做的果酱保质期多久？ nǐ zuò de guǒ jiàng bǎo zhì qī duō jiǔ
How long does the jam you made keep?
放冰箱可以保存一个月。 fàng bīng xiāng ké yǐ bǎo cún yí gè yuè
It keeps for a month if you refrigerate it.