Mass Customization: According to the individual needs of customers, the production method of providing customized products and services with low cost, high quality and efficiency of mass production. By definition, which of the following is mass customization? ['An office equipment manufacturer mass-produces a variety of standardized copier functional components, and the sales staff selects different components to combine according to customer needs to form copiers with different functions.', 'A computer manufacturer classifies the customer needs obtained from market research into several types, and manufactures these types of computers on a large scale.', 'An airline commissions a well-known clothing brand to design multiple uniforms for its nearly 300 employees.', 'A travel agency launched a "semi-self-guided tour", which only arranges half of the itinerary of the tourist. The rest of the time, tourists can freely choose the content of the event.']