1.All kinds of PCB 2.High precision,100% test 3. ... /1000 Copper Weight Outer Cu weight 0.5oz ~ 3.0ozInner Cu wight 0.5oz ~ 3.0oz Laminate MaterialsFR-4,FR-1,,FR-2,CEM-1,CEM ... .1mm) V-Cut Depth V-cutFR-4(1/3+-0.1mm);FR-1,FR-2,CEM-1,CEM-3(1/2+-0.1mm) V-cut angle ... confused with pcb,kindly contact me for more details! fr4 copper clad laminate pcb board manufacturer