... Series HCY machine is energy-saving, environment friendly machine, during the process it just generates less waste (sludge), the waste (Sludge) doesn ... engine oil, motor oil, car oil, hydrualic oil recycling machine, oil decolorization, deacidification, dealkalizing.-- oil vacuum distillation plant,-- ... waste engine oil ,motor oil into diesel.sludge oil recycling machine,crude oil refinery,CE certific