... . We offer low-volume,Prototype and Production PCB fabrication service, for rigid or flexible, RoHScompliant, High Tg boards. All project comes with ... ,Imm Silver, OSP etc.Board materialFR-4 glass epoxy, FR4 High Tg, RoHS compliant; Aluminum, Rogers, etc.Insulation resistance1012Ω (Normal)Current ... exposure machine:AOI testing machine:Soldermask&Silkscreen machine: 8 layer high Tg moulde pcb