Another way you can apply to save your manufacturing costs is to ask your suppliers to reduce their prices. Before attempting any negotiation, make sure that you have always paid your bills on time (so there will be no hard feelings between you and your suppliers). Also, ask for reasonable price reduction.
To increase your chances of getting the right deal, try to offer larger deposits to your suppliers. Let them know that you are considering some other good deals as well. If they’re not willing to give you lower prices, then you should consider sourcing from different suppliers.