"konlong" has become a chinese brand and a chinese brand name, and its products have been awarded a national exemption, including internal combustion engine lubricant, industrial gear oil, hydraulic fluids, lubricant, speed tank oil, anti-frozen fluids, brake fluids, motorcycle oil, metalworking fluids, oil for ships and lubricant additives. The various products of china oil lubricating oil corporation were subsequently recognized by internationally recognized enterprises such as the american petroleum association (api), daimler chrysler, bmw, volvo, cummins, man, siemens and general (gm). At the same time, a number of car and equipment oem producers, such as a steam group, the upper gas group, the east wind motors company, the jiang huai automobile, the huffy automobile, the jiley automobile, the chinese heavy frost, the tsui industrial group, the dragon industries group, the tide industries group, the zongsheng motor unit, the construction of motorbikes, and the construction of motorbikes and motorbikes, were selected for loading and service oil, the products were sold throughout the country and overseas. The kunlun lubricant, under china's oil leadership, has been continuously integrated and developed, resulting in five ongoing and one transformation with the "five unified, one-circle" business strategy of "uniform allocation of resources, common product standards, unified network layout, unified price management, unified organization for scientific research and research, focusing on the rolls". These include: continued growth in total sales, continuous improvement in product structures, continued improvement in production security capacity, continued improvement in market control and economic efficiency; and a shift from resource availability to brand operations. Lubricating oil operations have grown rapidly across the board, and the competitive position of the market has increased significantly. The kunlón lubricant has a strong supply security capacity, its production plants are well equipped with sophisticated methods of processing, testing, world-class blending techniques and sophisticated detection techniques, and it has the most complete and more sophisticated facilities in china. Based on the technical staff of the product research and development centre, the company organizes professional service teams that provide timely and well-developed services to clients at all times and wherever they are. In order for lubricants to remain mobile at low temperatures, they must be removed from them, which can easily condensate, a process known as de wax. The wax removal process not only reduces the condensation point of lubricating oil but also provides wax. Waxes are those hydrocarbons that are solid at constant temperatures (15°c), the main subjects being active alkanes and cyclic hydrocarbons with long-side chains, and those above c16 are solids at constant temperatures. There are a number of methods to de wax, and the methods commonly used are cold-pressed de wax, solvent de wax and urea de wax. Propane debromination the method is to extract hydrocarbons from slag oils using propane, i. E. To separate oils from asphalt using liquid propane, which has very little solubility in the vicinity of the critical temperature, and large solubility properties for oils (alkanes, cycloalkanes, small aromatic hydrocarbons). The critical temperature of propane is 96. 81°c and the critical pressure is 4. 2 mpa. When critical temperatures, i. E. When liquids are heated to above this temperature, external pressures, however high, no longer prevent liquid boiling from becoming steam, are called critical pressures. The ability of liquid propane to soluble oil and bitumen is reduced in areas close to the critical temperature below the critical temperature of propane. However, the solubility of asphalt has been reduced rapidly and the solubility of oil has been reduced very slowly. Thus, the solubility of oil in propane at a temperature range is much greater than that of asphalt。