... engine oil, waste lube oil, gear oil, falling petroleum, petroleum residue, oil sludge, anthracene oil, naphthalene oil 3. The advantages of our equipment (1 ... The material of the equipment is good and its price is low. In the same technical field, our equipments are the ... smell, no secondary pollution, and no waste water, waste gas, and waste residues emission. When the equipment is running, there is ...