... are inluding:-- transformer oil purifier,-- biodiesel production line-- turbine oil recycling machine,-- lubricating oil, hydralic oil regeneration,-- ... engine oil, motor oil, car oil, hydrualic oil recycling machine, oil decolorization, deacidification, dealkalizing.-- oil vacuum distillation ... Diesel production line,treat waste engine oil ,motor oil into diesel.sludge oil recycling machine,crude oil ...