R-SLPSubstrate-Like PCB High-density interconnection HDI R-HF1High-density interconnection HDI High-speed PCB Flexible printed circuit board （FPC） R-HS3High-density interconnection HDI High-speed PCB Flexible printed circuit board （FPC） R-HS2+High-density interconnection HDI High-speed PCB Flexible printed circuit board （FPC）. R-HS2High-speed PCB High-density interconnection HDI Flexible printed circuit board （FPC） R-HS1High-speed PCB High-density interconnection HDI Flexible printed circuit board （FPC）