Profile: Ronyyee Machine Co., Ltd. specializes in designing & manufacturing oil purification and recycling systems. We are an ISO 9001 certified company. We offer insulating oil purification systems, turbine oil filtration systems, lubricating oil dehydration & degassing systems, mineral oil re-condition systems, and de-coloring systems. We serve industries such as electricity, petroleum, natural gas, manufacture, metallurgy, and aviation industries. Double-stage vacuum transformer oil filtration machine is designed to prepare new and in-service insulating oil for use in electrical high-voltage equipment. It increases insulating oil breakdown voltage values by removing dissolved water, dissolved gas, and particulate contaminants. It is mainly used to improve the properties of insulation oil. After treatment, the ultimate di-electric breakdown voltage can be up to 75 kV.