1. In China, the difference between an assembly machine and a brand machine is that the assembly machine has no fixed brand. And the brand machine has a fixed brand. For example, you assemble the cpu of inter, the motherboard of ASUS, the video card of Xiaoyingba, the hard disk of Seagate, the display of Philips, the chassis of Jinhetian, the power supply of Great Wall, the memory stick of Kingston and the optical drive of BenQ. This is an assembly machine. If the machine breaks down during use. You need to judge for yourself. Which part is out of order? For example, the hard disk is broken. You need to go to the store where you bought the hard disk for replacement and maintenance. These things need to be done by yourself. And brand machines. That is, Lenovo put the cpu of inter, the motherboard of Asus, and the graphics card of Little Shadow Master. . . . Assemble them all together, put a trademark "Lenovo" and tell you that if there is something wrong with the machine. They will come to serve you. You spend more money and enjoy these people coming to your door. This is the brand machine.

2. After the assembling machine is assembled, you need to install the system yourself. Like win7. Pirated, of course. But it definitely works. The previous system of the brand machine must be genuine, and the price of the genuine system is very high. Manufacturers can't afford it, so they switch to dos system (free) or oem system (simplified version, with many problems), and now they simply use pirated system.

3. Therefore, an assembly machine without a system is the same as a brand machine without a system. After installing the system, the appearance has not changed. The biggest difference is that the brand machine has a fixed brand, and someone comes to the door to serve (within a limited time and a limited distance).