flexible circuit board design guide

{"title":"FR-4 Material Rigid Flexible Printed Circuit Board For GPS Tracking Chip ODM","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/cd\/a6\/f232647649af02d98d7098c58b38-200x200-1.jpg","attrs":{"Price":"0.2-6$\/pieces","Brand Name":"YScircuit","Model Number":"YS-0043","Minimum Order Quantity":"1","Delivery Time":"3-8 work days","Certification":"ISO9001,UL,REACH,","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"1580000","Product name":"Metal Core Pcb Circuit Board","Certificate":"ISO9001","Base material":"FR-4","Min. line spacing":"0.2mm","Board thickness":"1.6mm","Min. line width":"3mi","Service":"One-stop service","Surface finishing":"HASL,ENIG,HASL Lead Free"}}

{"title":"LCD LED Shielding Layer Membrane Switch Overlay Graphic RAL Color","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4c\/77\/5ab4b17985d60cb5485fab0625f5-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Lunfeng","Model Number":"LFMS06","Minimum Order Quantity":"1 piece","Delivery Time":"7-25 working days, To be negotiated","Certification":"ISO9001:2015","Place of Origin":"Shenzhen, China","Payment Terms":"T\/T, Western Union","Supply Ability":"500000 Piece\/Pieces per Month","Packaging Details":"First put into a polybag, then paked into a carton. According to clients' special requirements.","Product name":"Membrane Switch Overlay with shielding layer LCD LED","used on":"remote controller keypad membrane switch","Colors":"Pantone\/ RAL color, blue, red, black, white","Feature":"high quality, LCD window, LED, shielding layer","Printing":"Screen Printing","Type":"Meet Customer's Demand\uff0ctactile","Connector":"2.54mm","Key option":"pillow embossing button","Color":"RAL,Pantone","Material":"PET","Rear adhesive":"3M468","Life expectancy":"1 Million Times"}}