... delivery. Welcome To Rigao ElectronicsShenzhen 1-22 layer FR4 PCB board and Aluminum PCB with RoHS and UL certificate - Contract Manufacturing- Engineering ... .5oz ~ 3.0oz Laminate MaterialsFR-4,FR-1,,FR-2,CEM-1,CEM-3Process Requirements: Solder MaskColorgreen,light green,white ... ,FR-4-TG170/TG180,Halogen Free,Rogers,Arlon,Taconic,Isola,PTFE, Bergquist2). Surface Treatment: HASL,HASL lead-free,HAL,Flash ...