Maturity stage: during a computer’s maturity stage, the production delivery processes are standardized, sales volume reaches its maximum potential, and there is increased competition, often leading to lower prices for the customer.

Decline stage: during the decline stage, a computer’s sales stat decreasing, and the firm has to start preparing for its end. The price of products falls because there are many competitors; therefore, the firm will start divesting resources to other emerging products.

5.0 All the necessary supplies for delivering computer

5.1 The internal supplies

Procurement department：it helps company get suitable raw materials and components of computer at the right time, place and price (S. Anil Kumar,  2006).