Describe the various categories of industrial products with examples

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Industrial products are those products purchased for further processing or for use in conducting a business. The three groups of industrial products and services are materials and parts, capital items, and supplies and services.
a) Materials and parts include raw materials as well as manufactured materials and parts. Raw materials consist of farm products (wheat, cotton) and natural products (lumber, crude petroleum, iron ore). Manufactured materials and parts consist of component materials (iron, yarn, cement, wires) and component parts (small motors, tires, castings). Most manufactured materials and parts are sold directly to industrial users. Price and service are the major marketing factors; branding and advertising tend to be less important.
b) Capital items are industrial products that aid in the buyer's production or operations, including installations and accessory equipment. Installations consist of major purchases such as buildings (factories, offices) and fixed equipment (generators, drill presses, large computer systems, elevators). Accessory equipment includes portable factory equipment and tools (hand tools, lift trucks) and office equipment (computers, fax machines, desks). These types of equipment have shorter lives than do installations and simply aid in the production process.
c) The final group of industrial products is supplies and services. Supplies include operating supplies (lubricants, coal, paper, pencils) and repair and maintenance items (paint, nails, brooms). Supplies are the convenience products of the industrial field because they are usually purchased with a minimum of effort or comparison. Business services include maintenance and repair services (window cleaning, computer repair) and business advisory services (legal, management consulting, advertising). Such services are usually supplied under contract.