... foreign famous companies, such as PAll,HYDAC and MAN Oil filter for mechnical with good quality and best price has got good ... . 1. ApplicationThe filter has been widely used in transfomer oil, turbine oil, hydraulic oil, aviation kerosene, petrolum, chemical, power plant, coal carbon, ... call service before and after sale.Reason 10 Written in stone promise that 100% money back guarantee in 60 days