<Ul> <Li> Customers </Li> <Li> Suppliers </Li> <Li> Producers . </Li> </Ul> <P> The interests of these stakeholders and their relations to companies are described briefly below . Our purpose is to establish a framework for further analysis . </P> <P> The customers of a company are typically consumers, other market producers or producers in the public sector . Each of them has their individual production functions . Due to competition, the price - quality - ratios of commodities tend to improve and this brings the benefits of better productivity to customers . Customers get more for less . In households and the public sector this means that more need satisfaction is achieved at less cost . For this reason the productivity of customers can increase over time even though their incomes remain unchanged . </P> <P> The suppliers of companies are typically producers of materials, energy, capital, and services . They all have their individual production functions . The changes in prices or qualities of supplied commodities have an effect on both actors' (company and suppliers) production functions . We come to the conclusion that the production functions of the company and its suppliers are in a state of continuous change . </P>

Which is the best definition of a production concept