... insulation system. Structure and Appearance options:1 Stationary type: no wheel, no pneumatic tire. Mounted on base frame and covered steel frame ... brake, rear lights, tow-eye etc. (oil Purifier, oil filter, oil recycling, oil refine, reclamation, degassing, dehydration, insulation oil, transformer oil, lubrication oil, filtration, purification, low viscosity lubrication ...