Hello manager, Nice day This is Anne from Shenzhen JSD PCB Technology CO., Ltd. We are printed circuit board manufacturer providing Rigid boards, Flexible boards and Flex-Rigid boards. Capability Layer Count1-40(≥30 Layers needs Review） Board thickness VS drill size12:1 Line width/spacing2.5/3mil Min hole size0.1mm(laser drilling） SurfaceHAL/Lesd Free ENIG Immersion Tin Immersion Silver OSP Please contact us for more details. Thanks and best regards, Anne Ph/Skype/Wechat: +86-17092791810 Email: Anne@jsdpcb.com Website: http://www.jsdpcb.com