Hi Richard. there are several types material for pcbs,the main and pop used is FR-4.it can meet most of the electronic
product manufacturing requirement.but your product is used in some special field like high temprature,or run high speed signal line.u can use high Tg FR-4. also if your product is very simple.u can choose some low cost material like
CEM-1,FR-2, if your product is RF product,u can choose rogers and teflon. if lighting product,u can choose Albase or Cu base material.hope this can help you.
Andy