JING SING FAI ELECTRONIC LIMITED was founded in 1997, a leading manufacturer of PCB in China. Produced doubled-sided printed circuit boards and multi-layer printed circuit boards (4-10layer), high frequency multi-layer boards (many kinds of high frequency materials), aluminum substrate boards, heavy copper boards, high TG boards, characteristic impedance boards, and HDI boards. Our products comply with UL and ISO9001:2000.With advanced technology, high and stable quality, competitive price and fastest delivery, JSF is enjoying good reputation from customers around the world!