Longsum Company has continued to build a solid reputation for quality, service and reliability. From the very beginning, Longsum has provided high precision spur, helical and bevel gears that meet the rapidly changing and demanding requirements of the gear industry.

Longsum's primary goal is to ensure customer satisfaction by improving the manufacturing process, eliminating waste, and delivering a quality product on time at a competitive price.

To achieve those objectives, Longsum has embraced the continuous improvement philosophy while implementing the most advanced technology available for the machining, heat treatment and inspection of our products. We are an verified supplier on Alibaba and have consistently received vendor awards for both quality and on-time delivery. Longsum takes great pride in its history of steady growth and its record for maintaining long-lasting customer relations.