Among the different decisive components for establishing the quality of a mattress, springs play a primary role. For its products, Permaflex uses Bonnel springs in phosphated carbon steel, because they distinguish for their comfort and durability performances. Each single biconical spring is composed by patented and phosphated steel with temper treatment which allow it not to deform. The springs are assembled with a spiral in steel wire, that ensures a perfect union between them and optimizes their “collective work” , guaranteeing a perfect stability and resistance of the mattress, keeping an orthopaedic, solid and definite support over the time.
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