compliments slip
noun /ˈkɒmplɪments slɪp/
  /ˈkɑːmplɪments slɪp/
(British English)- a small piece of paper printed with the name of a company that is sent out together with information, goods, etc.(附在信息、货物等上印有公司名称的)赠礼便条,礼帖 - The only enclosure was a formal compliments slip from the accounts department.仅随函附上一张财务部的正式礼帖。 
 
- The only enclosure was a formal compliments slip from the accounts department.