Wellen PCB Co.,Ltd is a high technology PCB manufacturer, which is established in 1999 in shenzhen. Wellen was created by several PCB professionals , who advocate the technology innovation and apply the new technology to promote the enterprise progress.Our products include: Multilayer PCB,Metal based PCB,Hi-Tg heavy copper foil PCB,Flat winding multilayer PCB,High frequency PCB,Mixed dielectric PCB,high frequency PCB,Flex PCB and Buried&blind via PCB,Developing and manufacturing all kinds of exc