set sales

Baby milk powder drink, I didn’t have time to go out and buy, in a more famous shop for baby to order some. The goods in this store are sold in sets, I want to buy milk powder, the above would be supporting the bottle or supporting the nutrition, if your baby has not bought the bottle can buy the milk bottle and a set of, if you have already bought a bottle that can choose to match a nutritious rice powder, of course, you can also be purchased separately milk powder, but it is not cost-effective, no set of cheap. It is often said that the set sales marketing mode.