How to judge the quality of a fan?

Whether the merchant service system is perfect, whether the sales staff are enthusiastic, energetic and professional in using words, the internal management must be strict and effective. Similarly, the after-sales service personnel must follow up the service content in time and the quality is also high. Therefore, service attitude is the most important. Whether a brand is well-known depends on the perfect combination of product quality and manufacturer's propaganda. Products must be labeled with the "CCC" sign of national compulsory certification, and air cooler products without this license sign are not allowed to circulate in the market. The price belongs to the upper-middle level among peers. As the saying goes, you get what you pay. Something a little more expensive is always more durable than something cheaper. Go to Taobao, Tmall, JD.COM and other websites that specialize in selling electrical appliances or official website to inquire about relevant information and cost performance, so that you can buy products that you are satisfied with.