... to pad/pad to pad space6milMin drill diameter8milMin via pad24milMax board sizeSingle and double sides:550mmX1100mm;multilayer:550mmX640mmMin solder mask dam6milMin ... types base material to PCB processingHigh TG board, high frequency board(ROGERS,TEFLON) halogen-free board (FR-4,CEM-1,CEM-3)Other ... testing, gold slice up, Solder ability. laptop Electronic Multilayer PCB Board with pcb design