e (ZhongYouXin electronics co., ltd) are a professional pcb supplier from china especially for prototype, small volume and medium ***** For the competitive market, Good quality product always be supplied to our customers, with more competitive price and fast delivery term at the same time. Zhongyouxin can make pcb from 1 to 30layer. We passed UL, Rohs certifications. For the capbility, please check the followng info, Surfacefinish:HASL, LeadfreeHASL, Flashgold, ENIG(immersiongold).OSP(ENTEK), Immersion tin, Immersion silver, Hard gold. Selective surface treatment:ENIG+OSP, ENGING+Gold finger, Flash gold+gold finger, Immersion silver+gold finger, Immesion tin+gold finger Min line width/gap:3mil Min hole:0.15mm(mechanical drill)/4mil(laser drill) Max copper thickness:7oz Board thickness:0.2-7.0mm Min sodermask bridage:>=0.08mm Aspect ratio:23:1