Plug board shopping to pay attention to what?

One is to buy attention to pick a big brand. Big brands are trustworthy. Second, look at the appearance; high-quality plug board seams smooth and flat, no burrs around the shell flying edge. And poor quality is the opposite. Three observation. Observe the copper from the jack, high-quality plug board copper thick, uniformly bright coating. Secondly, high-quality plug board plug feeling moderate. The poor quality plug board plugging and pulling strength is too loose or too tight, each hole feel different.