High TG FR4 Multilayer PCB Assembly FAI/AOI/X-Ray inspection and ICT/Functional test FR4 remains the most widely specified base material for reliable electronics. Our high TG FR4 multilayer PCB assembly service delivers stable electrical and mechanical performance at elevated temperatures, with flexible ENIG and HASL surface finish options, solder mask colors and full AOI inspection for consistent quality. Key Features High TG FR4 (TG130-TG180) for elevated temperature