In 2008, the first choice of oil for shuangyashan gangue power plant (1x300MW) was yew brand. All the indexes of yew brand turbine oil were superior to similar products, especially the key index of demulsification, which was twice higher than the national standard. It was well received by technical experts. Yew brand steam turbine oil has become the designated oil of Harbin steam turbine factory, and become the supporting oil of steam turbine unit and ship steam turbine of large power station.