五月婷六月丁香狠狠躁狠狠爱,日韩中文字幕免费视频,亚洲精品高清视频在线观看,日韩久久久久久久久,欧美日韩插插插,97超级碰碰,亚洲欧美色图另类

This kind of product includes:Elastomeric seismic-protection isolators for bridges and buildings.It can absorb earthquake energy effectively by way of rubber’s elasticity and lead’s restorability.Products comply with:JT/T 822-2001 Lead rubber bearing isolator for highway bridge and GB 20688.3-2006 Elastomeric seismic-protection isolators for buildings.