In 2009, counterfeit products appeared in Kang Jie ultrasonic cleaning machine. These counterfeit products are produced by a company in Shenzhen, and all of them are sold under the brand, model, specification and packaging of Kang Jie, so as to attract customers' attention at low prices and make them feel at a loss. After learning this news, Kang Jie Company immediately took up legal weapons and went to Kang Jie Company for leave, because Kang Jie brand ultrasonic cleaning machine was influenced by Kang Jie Company.