Supply string supervision is the scientific disciplines of adding the physical production environment with strategies to ensure satisfactory, consistent and timely supply of raw materials, done goods and services to meet the demands of customers. Source chain systems are built surrounding the decisions created by producers and distributors of products. A source system is described as a sequence of operations that ensures that things are provided from the point of origins to the level of use. It provides all the levels of the supply process — from sourcing, production, transport and storage space.

There are four stages of the source chain: sourcing, manufacturing, shipping and storage area. In supply chain, goods are obtained from suppliers and converted into completed products. Once sourcing, it is the first stage of the supply process wherein suppliers collect all the necessary information about the potential buyers and the suppliers they want to help. After sourcing, manufacturers produce and travel the goods, when distributors store items and deliver them to the final users.

Every stage inside the supply sequence has its own specific functions and roles. The developing stage is an essential part of the system where makers make and produce goods to be provided to suppliers. Good suppliers will be those who care for the quality benchmarks of the goods they develop. On the other hand, marketers are those who will take delivery of the items to the end users. And lastly, safe-keeping and syndication are the kept parts of the provision system in which manufacturers and distributors to store the goods for the purpose of end-users and ensure they are in good condition once they will be received.