durable pocket coil springs
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Zoned Independent Pocketed Coil
1. Double wire feeding zones are applied in the process with different wire diameters for clearly differentiated support zones. 2, Durability is improved by overall heat treatment, as the product is able to pass 100,000 cycles without any visible deformation. 3, The sewing of the fabrics to each other is achieved by ultrasound welding of the edges, which removes the ability to be torn by wear and aging of the cotton fabrics.
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