Offer Details: S-Springs are mainly used for sofas (seat and back), car seat and beds. It?s usually fastened with clips and nails to a metal frame of certain size used for seats or beds; Compared with unstable elastics, it is tensile and flexible with high endurance; it largely increases the comfort of products. Our Sinuous Spring can stand more than 40,000 times of fatigue testing. With high quality and competitive price, we?re one of the leading hardware and spring enterprises in China mainland, and now |