Reliable Supplier of Flat Coil Springs

  • 18 Years flat coil springs Manufacturing Experience.

  • 8500㎡ Factory area with  6,700,000 capacity per month.

  • Full customization service. You dream of it, we bring your ideas to life.

  • complete and strict testing process, From raw material to final product.

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YongSheng: Your Premier Supplier of Flat Coil Springs

YongSheng factory

YongSheng – the leading manufacturer of flat coil springs in China, has been focusing on it for over 18 years. YongSheng is a comprehensive enterprise integrating research and development, production, and sales, committed to providing customers with high-performance, stable, precise springs products.

We have passed the ISO9001, ISO14001 certification, and strictly according to ROHS and CE. with advanced workshops and over 100 production and testing equipment, we will always be your preferred flat coiled springs supplier.

According to the strict quality assurance process, our springs product will be tested before shipping, such as tension testing, torsion testing, hardness testing, video dimension measuring, lifetime testing, and so on. Special techniques like oil-soaking, high-temperature baking will enhance the lubrication and shape-fixed.

We have cooperated with more than 5000 customers, including some top 500 enterprises such as Wal-mart, L’Oreal, Tesco, etc.

YongSheng, Your Premier flat coil springs Manufacturer, supplies a variety of flat coil springs, it includes constant force springs, power springs, constant torque springs, variable force springs, spiral torsion springs, and covers mounting & assembly services meanwhile, Contact us right now!

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Take a Glance at Our Workshop & Laboratory


We Have Served and Be Serving Customers

Listen to What Our Clients Say about Us


I can’t deny that YongSheng is really a reliable supplier. Last year I purchased some power springs from them, very quickly I received the goods with a nice package. And then sold them to my end-users, The feedbacks are good about the products after using, and emphasized would continue to buy such excellent products. So I will keep cooperating with him this year.

Matthew Fredrick, Distributor

It was in 2012 when we cooperated with YongSheng for the first time. In that time, we needed customized the constant force springs according to the drawings. Each demand was satisfied, even every detail. They have a good and comprehensive service.

Ms. Linda, Purchasing Manager
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