In fact, for a high rebound sponge, the sponge high rebound much money, not only from the hardness or elasticity to determine the quality of the sponge, Qinghai high resilience foam, which are an aspect, high resilience foam Which is good, from point of view to some extent out of the sponge quality. But the overall situation is we need to carry out specific analysis. We have to a large extent, depending on the uses to choose sponge type we need. We also need to understand one aspect. There is also, in many ways we have to pay attention. The hardness of the same foam density is not constant. Usually do sofa cushion sponge density of about 35 soft, hard, super soft, and other specifications. Do mattress is generally about 22. The so-called high-density foam is a salesman of goods commonly used terms. According to national customs authorities to explain the density of> = 45 for high density, low density medium density 18. <18. And in fact, as the industry standard of 30 sub-level density. High-density foam, high rebound sponge high rebound sponge prices, longtime fitness equipment (online consultation), Qinghai high resilience foam Ltd provided by longtime fitness equipment accessories. Longtime Fitness Equipment Parts Co., Ltd. (www.ltjsqc.com) is Dezhou, fitness leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Longtime leader in fitness equipment with the staff warmly welcome all inquiries negotiations to create Longtime fitness equipment a better future.