Hangzhou Dongdongle Technology Co., Ltd. was established on 20 15-07-28 with a registered capital of 500,000 yuan. The legal representative is Yang Ke, and the corporate identity has been cancelled. The industrial and commercial registration number is 330 19600007 1002, and the registered address is 5655, Building 4, Zhuantang Science and Technology Economic Zone, Hangzhou.

Brand (pinyin: pǐnpái), a Chinese word, simply refers to consumers' cognition of products and product series. Kotler, the father of modern marketing, defined in Marketing that a brand is a set of specific features, benefits and services provided by sellers to buyers for a long time.