You can find it in a supermarket that is not very small. Wal-mart, Zellers, FamilyPrix....
Various kinds of milk powder you can choose.(formula, Soybean...)
My sister in Hong Kong askes me, from time to time, to buy her cases of Enfalac Iron 20 made by Mead Johnson. She has many choices in HK, but she rather payes shipping charge to buy this concentrated liquid baby formula.
You can buy this formula from Maxi or some of the pharmacy stores.