The double torsion spring consists of one set of coils coiled right hand and one set of coils coiled left hand. These coils are connected, usually with an unwound section between the winds and work in parallel. The sections are designed separately with the total torque being the sum of the two.
Fu Shing was built in 1972; we are the professional manufacturer to produce all kinds of springs, Compression Springs, Extension Springs, Formed Wire Springs, Torsion Springs Zigzag Springs, Snap Pin, Retainer, Hook and so on.especially car seat bracket parts. We led in system computerization fully and there are more than one hundred machines that can produces over 10000 kinds of products, and we also have our owned welding robots to combine components. With the experience about 40 years,we can provide high quality products and also can suggest what may need to change according to the drawing or design in accordance with customers’ need. Fu Shing also gained ISO 9001 International Quality Certificate in 1997 and ISO 9001:2008 International Quality Certificate in 2009 and upgraded to ISO/TS16949:2009 International Quality Certificate in 2011. We can provide good quality, best price, prompt delivery and experienced R&D ability, Fu Shing will be a good supplier of you.