In addition to manufacturing new oil free airend, which can 100% replacement of the original oil-free airend, we also provide the whole series of oil-free airend refurbishment, replacement the whole set ofbearings, oil seals, gas seals and other spare parts, rotor and housing coating rework, clearance readjustment, after overhaulthe airend reaches the level of almost new one and the lifetime is extended for at least 3-5 years