... delivery Technical Specification For PCB : Number of Layer1,2,4 or 6,upto 18 layerOrder Quantity1 to 50,000Board ... ,complex,irregularBoard TypeRigid, Flexible, Rigid-flexibleBoard MaterialFR-4 glass epoxy, FR-4 high Tg, Rohs compliant,Aluminum,Rogers,etc.Board ... treatment control series 2. Water treatmetn control series 3. Dimmer series 4. Toy entertainment control series 5. Driver control series 6 ...