How to choose a good tablet

Text part of the tablet PC 
Many products are printed on the back of the fuselage, including the product logo. This text is usually printed on it with special technology, so it is not integrated with the backplane. After using the product, the surface of these pictures and graphics will be worn to varying degrees. The most typical is that their color becomes dark or different from that of other products of the same type. Because in the renovation process, because the replacement of abrasives is troublesome, many black heart businesses have adopted the grinding method. In this way, many worn logo surfaces will appear relatively abnormal luster, which is very uncoordinated.

Interface part of the tablet PC
In the interface part, we usually focus on the USB interface and headphone interface with more applications. The TF extension interface and HDMI interface don't care too much because they have less application frequency.

First, let's look at the edge of the headset and USB interface. The plugging frequency of these two interfaces is very high, so the edge of the interface is easy to leave traces of wear. Especially the USB interface, because the edges and corners of the interface are relatively clear, the new products will have obvious processing traces. Moreover, we can also observe the metal parts inside the two interfaces with our eyes. Because these metal parts will weaken the anti-oxidation part of the surface due to wear on these refurbished products, slight discoloration is still easy to observe.

Acoustic section of the tablet PC
Most tablets have external speakers. Because most of the audio surfaces adopt bee mesh design, the audio parts of these products will be contaminated with dust whether they are used or not, and it is not easy to clean. Moreover, as we all know, many good stereos will appear some filamentous substances after listening. Some high-end enthusiasts know that this is a special substance produced by some headphones after "burning headphones". This substance is also difficult to clean and will adhere to the sound surface.