PHP9000-4F resin is one kind of halogen-free and environmentally friendly material, no organic solvents, is conventional plug via green resin, is a kind of ordinary horizontal plugging resin, stable performance , high cost effectiveness, easy to grinding performance; dedicated for plug via resin of PCB outer layers to compensate for the cavities, bubbles and cracks quality problem which caused by the traditional photosensitive green ink plug via.