Specialized Manufacturing Machinery. Single-function machines are being replaced by all-in-one equipment that covers the entire production process. To win more deals, manufacturers need to propose smarter and more flexible machines. The machine industry or machinery industry is a subsector of the industry, that produces and maintains machines for consumers, the industry, and most other companies in the economy. This machine industry traditionally belongs to the heavy industry. Nowadays, many smaller companies in this branch are considered part of the light industry. Most manufacturers in the machinery industry are called machine factories.