Our company has strong technical force，advanced testing equipment and scientific real-time detection method, then the radial composite tolerance zone of the rack, the run-out tolerance of the tooth space, the limit deviations of the pitch of gear and the tooth thickness, the accuracy of the helix tolerance zone and the perfection of the tooth form could be ensured from the source. For that, the racks made in our company can run very stably. Thus, the racks used in the major projects of the famous enterprises, including the iron and steel smelting company, the International Container Dock, the MTR Corporation, American Tour Buses Corporation, Heavy Machinery Corporation, Light Industry Machine Corporation, Automation Equipment Corporation, etc, are designed, carefully created by our company.