"Hunger marketing" refers to the intentional reduction of output by commodity providers in order to achieve the purpose of regulating the relationship between supply and demand, creating "illusions" that demand exceeds supply, and maintaining the higher price and profitability of the product. Hungry marketing is more suitable for some higher unit prices and it is not easy to form a single Industry where products are purchased repeatedly. According to the above definitions, Which of the following are hungry marketing:. ["A manufacturer designed a new notebook computer, which is far from the brand's usual style. The manufacturer is not sure whether it can be accepted by the market. A limited number of 30,000 units were produced.", 'A car brand launches a new model, many people wait in line, and are even willing to increase the price. The manufacturer claims that the production of this car is limited, and it has been limited to a limited number of sales in order to expand the "hot selling" effect.', 'A brand\'s classic white sneakers have been selling steadily. Recently, due to the "nostalgia" of the fashion industry, the sales of white sneakers have increased sharply, and demand has exceeded supply.', 'Recently, high-end liquors are out of sales. In order to ensure efficiency, a well-known brand liquor producer has taken the initiative to limit production and increase the selling price, and sales have not declined significantly.']