Chinese phrase
请随时联系〜 qǐng suí shí lián xì 〜
Meaning
Please feel free to contact ___ at any time
When to use it
It politely invites contact whenever needed. It is common in helpful offers and business messages, and leaves the timing open.
Example dialogue
开会结束后，请随时联系市场部负责人。 kāi huì jié shù hòu qǐng suí shí lián xì shì chǎng bù fù zé rén
After the meeting, please feel free to contact the person in charge of the marketing department.
好的，我会把问题发邮件给他。 hǎo de wǒ huì bǎ wèn tí fā yóu jiàn gěi tā
Okay, I will email him the issue.