Médi composite oil, which is part of chang samedeh new energy limited, is an emerging technology enterprise with an international perspective. The company focuses on advanced international technologies, focusing on the development and application of new and environmentally friendly energy sources, and on extension services for energy conservation, new energy technologies and related specialized products as the core of its operations. In response to the sustainable development strategy, businesses have sought to create world-class, internationally competitive, new-energy enterprises with a view to developing green energy, creating a clean environment and improving people's quality of life. Medi composite oil is a new fuel that can replace traditional fuels such as liquefied gas, coal, gasoline, diesel, etc., which are refined as raw materials from various renewable lipid compounds. A liquid fuel combustion produced through a lipid exchange reaction is free of black smoke, non-smelting and non-hazardous gas emissions, and all the physicochemical indicators tested meet standards and are biomass renewables. Midi composite fuel fuel combustion is fully heat-efficient, products are safe **, products are safe **, no toxic hazards, ignition of a single point of ignition with a high source of raw materials and cheap prices。