... 1, CEM-3, High TG, FR4 Halogen Free, Rogers· Board thickness: 0.21mm to 7.0mm· Copper ... in hole: >25.0 um (>1mil)· Size:- Max. Board Size: 23 × 25 (580mm×900mm) - Min. Drilled ... 3mil (0.075mm)· Surface finishing: HASL / HASL lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold, ... OEM services to all sorts of printed circuit board assembly as well as electronic encased products. Sterling ...