I think 5 1ibm is quite bad. Last year, I also ordered a T420 NC5 cheaply. When ordering machines, I repeatedly told the salesperson (a mm named Heimei) that all the machines I got were tested, and she said they would be fine. Because of business trip, my colleague helped me check the machine. When I checked the machine, I found many problems. The customer told me to close the phone first through qq. She said that the system was not installed, and later her colleagues confiscated it. After returning to Beijing, I asked her to install the system and send it to me. The result has never been sent. When asked in time, she replied that the machine had problems after the test and the temperature was too high after starting. Well, I can only assume that 5 1ibm is a liar.

Theoretically, business administration.