Division I professional production of the PCB, to focus more on the the PPTC polymer materials, the PCB manufacturing and control (0603,0805,1205,1206,1210,1812,2018,2920, etc. Series models)��Special materials PCB board: polymer materials board, BT plate, aluminum plate, copper substrate, ceramic plates, high-frequency boards, multilayer software PCB��Delivery cycle, quality assurance