Many customers then purchase shielding will ask looking at the same cell phone jammer instrument, mobile phone signal shielding why there is always a low price also has a high price, the same appearance will also appear in the price of the price of the low price, how do we go to distinguish it? How to choose a good mobile phone signal shield manufacturer?
1, first of all, we need to understand their real needs, I need to shield some of what signals, the use of how large the area, what is the surrounding environment, the need for those places do not affect the pros and cons of shielding how much space?
First of all, provide this basic information to the shield custom manufacturers, manufacturers will give you reasonable advice based on your needs, if the manufacturers recommend products to you at the beginning, it is estimated that this is not professional can be directly eliminated, the manufacturer will recommend the appropriate products and models according to your requirements, and then will tell you how to use the installation details, and the machine's attention!
2, mobile phone signal shield why there will be the same style price difference? Signal blocker from the shell material points of aluminium alloy plastic shell, aluminium alloy shell is also divided into flat, with grooves and so on, why so much how do we choose? First of all, the plastic shell and aluminium shell has its own advantages and disadvantages plastic shell launch effect and performance is certainly not as good as the aluminium shell, if they are aluminium shell how do we choose, of course, is the back of the Dazhan electronic machine with a notch is the machine heat sink shielding performance than the other models of the effect is good.
At the same time, we need to be alert to some sales of wireless mobile phone signal shielding instruments, individuals or companies using second-hand chip, poor quality capacitor machine, the market the same appearance of eight-way shielding jerry-built inside the chip on the 5-way and then is the use of the difference in materials, the chip is the heart of the shielding device, which is directly related to the shielding device to use the life of the chip from the origin of the choice, Japan, the United States, South Korea, Taiwan, domestic, but many shielding devices, but the shielding device is the heart of the shielding, which is directly related to the shielding device life.
Domestic, but the shield many manufacturers in order to save costs a lot of choice is South Korea and Taiwan, domestic chip this is a second-class manufacturers to choose, cheap products will also be a lot of choice of second-hand chip, this chip is very fatal, are the use of high temperature from the machine on the disassembly of the chip after the second use of a lot of internal components by the impact of high temperatures deviate from the fallout or soldering, the service life is very short general shielding device used for a few months there will be How many problems, or some shielding intermittent shielding, occasionally good effect occasionally not the symptom is a second-hand disassembled chip. Through the judgement of the above points can basically judge whether a shield is good or bad, but also determines the service life of the machine.