Auto parts you have to check to see if they have special technicians who can skillfully control and apply the priate technology, so that they can handle the problem of sophisticated terminal technology, instead of just copying other products, and because the technology does not pass the test and presents the loophole, therefore, the technical ability is very important, does not have the sufficient strength in the technical aspect, such regarding the precise terminal this product to say in its quality also very difficult ability to arrive at the high level.