Company division (5)
I believe the answer is:
sales
'company division' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sales that I've seen before include "Income received for goods and services over a given period" , "Periods when shops offer goods at reduced prices" , "Periods of price reductions" , "commercial exchanges" , "Occasions for buying at reduced prices" .)