Is the domestic expectoration machine credible?

When choosing a domestic expectoration machine, we must pay attention to several aspects: First, whether there is a national medical device registration certificate and production license, which is the basic requirement. Second, we must choose brands that focus on the field of medical devices and have rich production experience and professional technology accumulation, so as to be more reliable in quality. The third is to understand the user's reputation for the product, which can be searched online or related to WeChat group. In the process of understanding, we must understand the actual use effect and durability. Although the domestic expectoration machine is more advantageous than the imported one in price, we should pay attention to the quality and safety of the product when choosing it. Many domestic brands of expectoration machines (such as Qijia) are as good as imported ones while ensuring the price.