ii. Foundation Goods – These products are used to make other products but they do not become part of the finished product. Foundation goods are capital items, and thus, when they get old and are worn out, they can be depreciated from expenses. c. Installations – These items cannot be easily removed from the office/manufacturing building. For example, cranes, elevators, escalators, blast furnaces, turbines, presses, safes, etc. The buildings themselves, lands, supercomputer systems, airplanes of an airline company, oil tankers of an energy company, etc. are also examples of installations. Installations are considered fixed assets of the company and are depreciated in time. Installations are usually quite expensive and thus their purchase requires the formation of a buying center when making a purchase decision. d. Accessory Equipment – These products are usually smaller pieces of equipment that are less expensive than installations and can easily be removed from buildings. For example, hand tools workers use in the factory, fork lifts, smaller motors, personal computers and lap tops, furniture (tables, chairs, sofas, lighting equipment, etc) used in the office, etc. These products are usually available in standard sizes and versions, have lower prices and may be bought from many suppliers