Shenzhen Welsun Electronic is one of the leading suppliers of printed circuit boards found in 2006. Through our wide network of PCB factories we are able to provide a wide product mix.from simple single sided, double sided printed circiut board to complex multi-layers pcb for advanced high-tech enterprises to a world-wide customer base, Applications cover Security,power supply, Led lighting, telecom, industrial control, Auto, consumer electronics. We can offer a flexible and secure circuit board supply through a close collaboration between both supplier and customer Skype: sinbangpcb