... .Fast leadtime,experienced servic FR4 led pcb,MCPCB(Aluminum pcb)Layer:single /double sidedSurface finishing:Chemical Gold,Plating Tin,Immersion Tin,Chemical ... ~240mmForming Tolerance: ±0.15mmProcessing Capacity:7000 sq. meter/monthSingle and double layer led pcb apply for LED field,your trust souring for ...