3mil 4l ultra thin pcb

{"cid":"91202162","title":"3mil 4L Rigid Flex PCB Black Solder Mask Diy Flexible Circuit Board","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/90\/36\/ff3fab2c29e8f73d9e8dd08c9d28-200x200-1.jpg","attrs":{"Brand Name":"Huashengxin","Model Number":"210579","Minimum Order Quantity":"1pcs","Delivery Time":"fastest 24 hours for 2L and 4L prototype, 3 days for HDI board production","Certification":"UL , ISO9001","Place of Origin":"China","Payment Terms":"T\/T","Packaging Details":"vacuum","PCB Layer":"4L Flexible Rigid Printed Circuit Board\u200b","Material":"FR-4 +PI","Board Layer":"4L","Surface finished":"Immersion gold","Board thickness":"0.8mm","Copper thickness":"1\/1\/1\/1oz finished","Min. hole size":"0.15mm","Min.PCB track\/gap:":"3mil\/3mil","Solder mask":"Black, both sides","Special requirement":"Via size 0.15mm"}}

{"cid":"91215411","title":"1-4oz Copper Thickness High Speed Printed Circuit Boards With Blue Solder Mask Color","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a4\/86\/ebb3cfd97a0679dfda7df7285fa4-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"JIETENG","Model Number":"PCB circuit board","Minimum Order Quantity":"Negotiable","Delivery Time":"5-8 working day","Place of Origin":"China","Payment Terms":"Negotiable","Supply Ability":"360000 square meters \/ year","Packaging Details":"Blank carton, vacuum packed","Copper Thickness":"1-4oz","Material":"FR4","Layer":"2-10","Packaging":"Vacuum Packing, Bubble Bag, Carton Box, Etc.","Solder Mask Color":"Green, Blue, White, Black, Etc.","Impedance Control":"\u00b110%","Min Trace Width\/Space":"3\/3mil","Silk Screen Color":"White, Black, Yellow, Etc."}}