狠狠色狠狠色综合曰曰_国产成人高清视频_斗罗大陆第162集_日本大黄网站

This kind of product is comprised of high-damping rubber and plate connected with bolts.It is used under 8 degrees of seismic intensity in highways and municipal bridges.Products comply with:JT/T 842-2012 High damping seismic isolation rubber bearings for highway bridges and GB 20688.2-2006 Elastomeric seismic-protection isolators for bridges.