... ,best quality, prompt delivery & best service Single-sided Printed Circuit Board:Layer count: 1Materials: epoxy resin panels (FR-4);AluminumThickness: ... customers more convenient,We set up a new department to provide a new service since 2006 to help customers purchase ... . Single side Aluminum PCB ,LED Aluminum PCB,printed circuit board,PCB electronic , PCB layout design,PCB game board, 1 layer pcb