... , ultrasonic cleaning machines etc Our PCB board manufacture and PCB assembly service: * PCB board file with parts list provided by customers ... 50,000Board ShapeRetangular,round,slots,cutouts,complex,irregularBoard TypeRigid, Flexible, Rigid-flexibleBoard MaterialFR-4 glass epoxy, FR-4 ... ,Yellow,Blue,BlackSilk ScreenDouble-sided or single-sided in white,yellow,black,or negativeSilk Screen Min Line ...