外包(bao)膠采用(yong)聚(ju)氨酯(zhi)材料(liao)，具有超強耐磨和(he)抗脫落的(de)特性；產品尺寸和(he)軸承型號均符合(he)KONE標準。

The circumjacent adhesive is made of polyurethane, which has super resistance to abrasion and peeling. The dimension and bearing model are matched to KONE standard.