Printed Circuit Board Manufacturer: Elecsound is a manufacturer of Printed Circuit Board ( PCB ). Our products included 1-12 layers PCB, PCBA, Our PCB factory has obtained ISO 9001 and UL, and we specialize in single, double-sided, 4 layer to 8 layers at a very competitive price with excellent quality. Lead time is 7 to 10 days only. site:www.elecsound.cn E-mail:wilson@elecsound.cn Tel:86-755-83045964 Fax:86-755-82513718 Elecsound Printed Circuit Board Manufacturer Ltd