It forms an oil film between the various moving parts of the electrophoresis conveyor line, reduces the friction coefficient, reduces the wear between the parts, and prolongs the service life of the equipment. It takes away the heat generated by the moving parts, reduces the temperature of the equipment, and prevents overheating damage. It forms a seal between the parts to prevent impurities such as dust and moisture from entering, and at the same time prevents lubricating oil from leaking. It forms a protective film on the metal surface to prevent metal parts from rusting and corrosion.