& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; excellent energy saving effect, to the greatest extent reduce fuel use; excellent viscosity temperature characteristics and low temperature characteristics, to ensure the hydraulic system has good cold start pumping and send; excellent anti emulsification, anti foam, air release and ensure accurate delivery of the hydraulic system power; excellent shear resistance, in the harsh working conditions still has good viscosity retention; especially suitable for the temperature change of the open-air operation of engineering machinery, construction machinery, mining machinery for large, high hydraulic system