Specifications: 1) Highly precise body processed on the special CNC lathes 2) Robust and highly wear-resistant rotor shaft designed with French advanced technology 3) Long life and high durability supported by lubricative and low friction rotor chamber 4) Perfect self-protection with highly precise relief valve system 5) Low noise level achieved by being under 10mg/cm balancing 6) High efficiency achieved by below 0.02mg rotor-casting radial clearance 7) High output performance achieved by below 0.004mm rotor-casting axial clearance 8) Performance higher than JIS (Japan Institute Standard)