Management of Materials and Inventories:

Not only scheduling operations and personnel but also inventory and materials management needs a lot of energy from the production managers. At present, there is a quest to just in time production principle, in which materials are acquired or produced "just in time" for use at the next production stage. This principle utilizes scheduling and lot-sizing procedures in order to keep inventories to a minimum without harming the efficiency of the production procedure or decreasing customer service. These principles include some features also such as improved work methods; quality assurance methods and they have produced several benefits.