The board for my 16-channel PCM driver was superbly manufactured by Elecrow. Even the font sizes of 0.7 mm and a thickness of 0.1 mm are wonderfully legible. The quality is impeccable, and the production time of four days is a good one. Elecrow can't be blamed for the 10-day delivery time. I've been ordering my boards from here for years and have always been very satisfied.