What should I pay attention to when buying ultrasonic dental scaler? Which brand is good?

1\ When purchasing ultrasonic dental scalers, you should first try to choose the products of manufacturers who have been engaged in dental scalers for many years, that is, old brands. After all, they can survive to this day, and the quality is still passable. Recommended time-honored brands: Guilin Woodpecker, Guilin Superstar, Zhengzhou Yimei. These three companies all had a certain scale in the 1990s. Followed by Zhengzhou White, Zhangzhou Diamond and Changsha Zhongnan. Guangzhou, Ye Lan, etc. After 2006, many new manufacturers and brands have mushroomed, such as Guilin Likang, Guilin Weirun, Nanning Bora, Foshan Wo Wo, Foshan Biying, Wuhan Mubang, Shengzhou SKL and Suzhou Mairuite. In short, it is recommended to buy old brands, which is relatively more secure. 2\ Try to let colleagues around you recommend the products of good manufacturers they use. 3\ Try to buy a factory near you.