1. Axle Beam adopt high-quality alloy steel (20Mn2), whole piece heat treatment to increase its hardness and tension; Bearing position with high frequency-quenched treatment to provide super durability and fatigue capability. 2. Processed by CNC lathe machine, Robot welding, automatic assembly and convey line. Easy assembly and disassembly to increase maintenance efficiency. 3. High-quality, asbestos free and Self-research - producing SHENLI No.108B liners can guarantee to you 100，000km. At same time the brake with good performance, long life, no noise and environmental friendly.