脑筋急转弯：What is this?

来源: 于 2021-07-07 10:47:18 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Coca Cola Canada Plant.

As a contractor, I have to put this small thing on my uniform , never seen it before:)

It's Covid -19 related stuff:)