It is formulated with refined base oil and a variety of additives. It has excellent extreme pressure and anti-wear properties, thermal oxidation stability, good corrosion resistance, rust resistance, foam resistance and excellent low-temperature performance. When used in the environment of -15 ℃ -40 ℃, it can effectively protect spiral bevel gears, hyperbolic gears and other types of gears operated under harsh conditions such as high impact load, low speed/high torque, high speed/low torque.