... fracture / GB/T2546Rebound97% /DIN18032Shock absorption55% /DIN18032Coefficient of sliding friction0.59 /DIN18032Vertical deformation3mm /DIN18032CertificateCE/SGS/ ... installed after reduction. About UsHeadquartered in Zhengzhou of Henan Province, China, Henan Sangong Lihua Industry ... integrated sports industrial company, which is a series of design, development, production, marketing, construction. ...