... ,design experienve have more than 5years 2.professional factoary assembly , 1.we are have more than 50 mcu( ... than 5years expericance ,and ther are profession ,can made the pcb component price more lower3,deliever time is very short, because ... than 5years expericance ,and ther are profession ,can made the pcb component price more lower3,deliever time is very short, because ...