... -1, CEM-3, High TG, FR4 Halogen Free, Rogers Board thickness: 0.21mm to 7.0mm Copper thickness ... hole: >25.0 um (>1mil) Size: - Max. Board Size: 23 × 25 (580mm×900mm)- Min. Drilled Hole ... 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. ...