1,no pollution caused by general oily lubricant ; 2,reduce the incidence of casting porosity; 3,extend the service life of the

1,no pollution caused by general oily lubricant ; 

2,reduce the incidence of casting porosity;

3,extend the service life of the plunger tip; 

4,keep the workshop, the ceiling, floor clean, accords with modern green environmental 

   protection requirements.