Dear Sir/Madam   Have a nice day.   It is glad to write to you with keen hope to open a business relationship with you. This is Erin from Shenzhen JSD PCB Technology Co., Ltd. in China. JSD PCB is a manufacturer of prototype, small volume, superior difficulty, high precision, high quality PCB.   JSD PCB Capability: Surface treatment-------HAL, Lead free HASL, Gold finger, Immersion Gold, Immersion tin, Immersion Silver, Flash gold, Hard gold, Peelable soldermask, OSP. PCB thickness------8.27-275.8mil (0.21-7.0mm) Max copper weight------10 OZ   Special Techniques------blind and buried vias (min hole size is 0.1 mm), high layer with heavy copper   JSD PCB Service: Supply the best project fit for production customized Professional engineers process your Gerber files. technique support, quick response, quick quotation, etc.   If you have any PCB demands, please don't hesitate to contact me. Looking forward to your earliest reply.   All the best Erin Lee Shenzhen JSD PCB Technology Co., Ltd. www. jsdpcb.com erin@jsdpcb.com