... pcbmanufacturer ,our products include blank pcb, single sided pcb,double sided pcb,multilayer pcb,flexible pcb,fr4 pcb,fr2 ... 0.15mm)CNC Tolerance± 0.004”(0.1mm)V-Cut Depth( residual thickness )FR-4(1/3+-0 ... -3(1/2+-0.1mm)V-cut angle15°,18°,30°V-cut Shapeline,hole,V-shapeSurface FinishHASL,HASL ... 288±5ºC; 10 sec. inspect delamination, etc) 7.Tape Test (adhesion test) 8.Peel Test (conductor peel strength ...