I don't know how to describe this amazing pcb board
This pcb boards are made by FR4 material with 0.8mm thickness, 0.5oz copper thickness, green solder mask and white silk-screen, ENIG surface treatment.
This is how it looks after PCB Assembly, which has two usb, the regular usb is for connecting with computer, and the micro usb can be used for connecting with other devices.
Contact us, tell us your plan, your idea, you will have this kind of good pcb and assembly.