Dear Friend, Good Day! As an exporter and manufacturer – JSD Electronics & Technology CO.,Ltd mainly specializes in “Small volume, Rapid proofing” PCB, with more than 10 years manufacturing experience, a team of 70 engineers and 200 workers. All of our items as per ISO and UL standard certificate can be supplied with reasonable price. Technical capacity: Layer count1-40 Surface TreatmentTin lead /Leadfree HASL、 Flash Gold、 ENIG、 OSP、 Immersion Tin / Silver、 Hard Gold Min Outer Line Width(6-12um base copper, before compensation)2.5-3.0mil(achieve copper Thickness30um-35um) Min Outer Line Spacing(6-12/18um base copper, after compensation)2.5mil Max aspect ratio for board thickness vs drill bit size12:1 Drill bit sizeMax 6.5mm, Min 0.15mm Min finished size10*10mm Production cycle: 2 layers: 24hours, 4-8 layers: 48hours, 10-14 layers: 72hours. Warmly welcome to visit our factory and free samples can be sent on request. Jack Shenzhen JSD PCB Co.,Ltd www.jsdpcb.com