Goodsail is a high-tech enterprise which specializes in manufacturing of high-precision, high-density and high-reliability PCB from 2 to 30 layers. Types of surface treatment include H.S.A.L, H.S.A.L. –Lead Free, O.S.P .gold plating, immersion gold, immersion Tin, peelable mask, gold-finger, carbon ink, blind/buried via. New base-materials PCB include High-tg, Aluminium base, ROGERS board, Teflon, Ceramic-base, thick copper board, Etc. Maximum board thickness could be 8mm, and maximum copper thickness could be 8 oz