YUAN SINE SPRING has been exporting our own high quality custom torsion springs for decades. YUAN SINE SPRING produces a number of different product series, including extension springs. Built with high quality materials and designed to make the most of the amazing ergonomic design, it exclusively gives users the perfect writing and drawing space. The product does not require any maintenance. Finely designed, this product produces zero UV emission and infrared radiation which is harmful to users. This product performs well in protecting users' eyes and skins. It is a necessary component in many devices, machines, and systems.
As a company bears social responsibility, we see it as our responsibility to handle resources and energy efficiently as well as to avoid environmental risks at all of our locations.