... -4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,Aluminum material3Board thickness0.2mm-7mm4Max panel size630mm*520mm5Min.drilled ... .line spaceing0.075mm(3mil)8Surface finish/treatmentHALS/HALS lead free,Chemical tin,Chemical Gold,Immersion gold Inmersion Silver/Gold, ... tianweisheng electronic co.,ltd is a professional PCB printed circuit board manufacturers, production bases located in Bao'an, and convenient ...