Yingstar can provide you: PCB design, PCB fabrication, PCB assembly, and engineering support. Yingstar PCB Technical Capabilities:layer1-36 layerMax Board Size1100*599mm 43.3" * 24"Min ... finishHASL,Nickle, Imm Gold,Imm Tin,Imm Silver, OSP etc.Board materialFR-4 glass epoxy, FR4 High Tg, RoHS compliant; Aluminum, Rogers ...