Advantages: 1 Improves the surface of the dies:decrease the oil sludgeon the surface of the dies.
                  2 Spray evenly increases lubricating &the inwall of shot sleeve and the plunger tip lubricate evenly,improve thedies's     

                      quality and yield.                                                                 

                 3 Environmental Protection.decreases the black smog.
                 4 Technology improved easily.Only the plunger rod changed can have an obvious effect.

Remarks:     We can make all kinds of plunger rods according to your drawing.