Waste oil is a two-sided body with dual characteristics of pollution and resources: improper handling will cause environmental pollution, and recycling and recycling will save energy and relieve the pressure of resource shortages. According to the “National Catalog of Hazardous Wastes”, waste mineral oil is classified as hazardous waste, numbered HW08. At present, the vast majority of... https://www.oilrecyclingplant.com/how-about-waste-oil-recycling-in-china