High-density foam (High-density foam) is the weight per cubic meter 45 kg of sponge sponge. Sponge in the industry to distinguish the method is to divide the density, density of the sponge is KG / M3. Is the weight per cubic meter sponge. Common sponge is structured into high-density foam, foam density, low density sponge three. High-density foam, memory foam hole tall, very full, often used for sound-absorbing cotton, sofa cushions, soft packs and other materials. According to the national customs authorities to explain ≥45 density is high density, density of between 45 to 18 density, density <18 low density. 1, by hand: hand and hold the sponge can quickly rebound, fluffy sponge as well, if it is rigid sponge feeling inferior. 2, smell the smell: normal sponge has a little odor, but it will not have much impact on the human body, but if the bad taste insufferable if high resilience foam specification, illustrate the use of poor quality materials. 3, observe the appearance: the quality of high resilience foam in addition to special large empty high resilience foam manufacturers, air chaos outside, the general appearance of the more delicate sponge, pore the smaller the better the quality. The process of resolution of the sponge sponge density, domestic sponge craft current density can reach but not exceed 35%. With this sponge products on human health is very good. High resilience foam prices, longtime fitness equipment (certified), high resilience foam Ltd. Yunnan 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.