... %Copper weight0.5oz, 1.0 oz, 1.5oz, 2.0oz,3.0 oz,4.0 ozSurface finishHASL,Nickle, Imm Gold,Imm ... .Board materialFR-4 glass epoxy, FR4 High Tg, RoHS compliant; Aluminum, Rogers, etc.Insulation resistance1012Ω (Normal)Current strength10APeel strength1.5N/mmThermal ... : Planar exposure machine:AOI testing machine: Soldermask&Silkscreen machine: 2 layer black soldermask led pcb