Because of the need of brand upgrading, Dayao has 550 guests. In 20021year, Dayao officials started brand upgrading activities with the slogan of "big soda, drink Dayao". Since then, soda has been divided into two types, big soda and small soda. Kiln focuses on baking soda. The most direct expression is the genetic endowment of "big glass bottle" and the classic "guest taste". Large glass bottles 550 ml and 520 ml have become the main products of brand promotion. Therefore, Dayao's guests have 550 ml because of the need of brand upgrading. Dayaoke is the trademark name of Ningxia Dayaoke Beverage Co., Ltd. registered in the State Trademark Office. It is a classic carbonated soda with a unique "guest taste" taste.