1.fr4 94v0 PCB board 2.single layer circuit board 3. HASL surface finish 4. Min trace & min space ... 5. PCB manufacturer Our Ability Specifications: Materials: FR-4, CEM-1, aluminum, and moreFinish board thickness: 0.2 to 3.2mmExternal ... , red, white, blue, matte green, matte black, and more single circuit pcb board