"New" top block - USES high strength reinforced polyamide materials, tenacity non-slip, not easy craze. And can protect car chassis paint won't damaged.
“ 新型” 顶块——采用高强度增强尼龙材料， 坚韧防滑， 不易开裂。并且能够保护汽车底盘漆不会损坏。
To do so, he does not cause surface layer and cement mortar is inconsistent, surface water mud too much, easy to the problem of craze.
这样做，就不致造成表面与里层砂浆配合比不一致，表面水泥浆太多，易于开裂的问题。
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