1 Restoration used machine oil . 2 Heat preservation material . 3 No acid used ... . Edegs: 1 To Restoration used machine oil.2 Stainless steel filters. Automatic reverse-washing system. Two main filtering systems to ensure ... ≤90Weightkg600072008500 (oil recycling, oil refining, reclamation, regeneration, degassing, dehydration, machine oil, engine oil, used oil, black oil, lubrication oil, waste ...