Sam limits the purchase of 36 cans of milk powder. The restriction of 6 pieces of milk powder in Sam means that one piece of milk powder is 6 cans, and 6 pieces are 36 cans. Restricting purchases is a commercial measure to prevent malicious snapping up in the same industry. Sam milk powder is cost-effective, delicious and rich in calcium, which is especially suitable for lactose intolerant shoppers. It doesn't have the smell of sheep, and the milk is rich in flavor.