Added value is the abbreviation of added value, which is the value newly created through effective labor in the production process based on the original value of the product, that is, the new value added to the original value of the product. According to the above definition, Which of the following behaviors increase the added value of the product are:. ["Signature of a star's prize for the winner of an entertainment event.", 'Rainy days vendors sell rain gear in scenic spots at a price higher than the market price.', 'A beverage manufacturer changed its products from past cans to plastic packaging.', 'Individual vendors ask people to draw various beautiful patterns on white T-shirts for sale.']