quick-turn-fr4-pcbs. More fast lead time. More cheaper price. Higher quality. FR4 base:TG 140. TG 150. TG 170. TG180. We have made FR4 pcb boards from 2 layer to 50 layers.
And We have used FR4 base. AL base. Copper base. Ceramic base material. Flex base. Rigid-Flex Base. Rogers base. and other kinds pcb base core.