摘要：The paper analyses the techniques that can be used to make a rational decision on a initial effective input mix of production. The methods of input supply by purchasing with other companies, input supply by concluding temporal contract with specialized companies and input production within companies through a vertical integration are analyzed in details. How to decide on the optimal method of supply for a specific type of input is researched in the end of the paper.
关键词：rational decision; input; supply; cost; production
