Industrial goods can be classified in terms of how they enter the production process and their relative costliness. Identify the three groups of industrial goods

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The three groups of industrial goods include:
1. Materials and parts are goods that enter the manufacturer's product completely. Raw materials (farm and natural products) and manufactured materials and parts (component materials and component parts) compose this group.
2. Capital items are long-lasting goods that facilitate developing or managing the finished product, such as machinery (installations and equipment).
3. Supplies and business services are short-term goods and services that facilitate developing or managing the finished product.