... our patent technology of balancing-net system and 5-zone spring system;2,apply the theory of human-engineering and mechanics ... ;8,high quality, 20 years warranty.About Us Guangxi Hisleep Mattress Group Co., Ltd(Guangxi Shuibao) is a large and profossional ... the ONLY FACTORY in China who manufacturing unique balancing-net MATTRESS, awarded 11 National patents. Having 21 years producing experience, our ...