Choosing a manufacturer is also crucial. Don't choose those who have just been in the business for a few months, because the technology is not mature. Choose those who are already on the road and can do post-service well. General manufacturers only come to repair local ones. So choose the nearest manufacturer. Don't choose manufacturers that are too big, because they have many customers, don't care about your small customers, and don't care about maintenance services. . .
In fact, if you go to the factory, the general technology is already very mature, then you choose service. Whoever serves well will be chosen. This is the reason for the success of China Lenovo notebook. Good service is the most important thing, because no one can guarantee that there will be no problems with the machine.