... pad to pad space6milMin drill diameter8milMin via pad24milMax board sizeSingle and double sides:550mmX1100mm;multilayer:550mmX640mmMin ... material to PCB processingHigh TG board, high frequency board(ROGERS,TEFLON) halogen-free board (FR-4,CEM-1,CEM ... -3)Other testing requestImpendence testing, Hole resistance testing, gold slice up, Solder ability. Electronic Multilayer PCB Board ...