A friend of mine is very fond of designing. When I was a university, I chose my favorite specialty. They also had a lot of design. Whatever it was, friends were very interested in it. They would do their best to design all kinds of things. Last time they told me they were designing a adapter . At the beginning of the adapter completely do not understand, after a careful study at noon after their own understanding of the adapter , and then after learning and continuous accumulation of adapter to study, is also a very good product. Last week, they took a probationary stage. There was no problem. Friends said that they would soon be on the market. I hope most people would like it.