Safety protection function. The upper cover and cup body of the wall-breaking machine are not installed correctly. In order to prevent ingredients from overflowing when linking, the switch of the handle of Jiuyang high-speed mixer can play a role in safety protection. Jiuyang Co., Ltd. (hereinafter referred to as Jiuyang or Company), formerly known as Shandong Jiuyang Small Household Appliances Co., Ltd., was founded in 1994 and was established in July 2002. In September 2007, it was officially restructured into a joint-stock company, and now the chairman and president of the company is Wang.