聚氨酯nwere uru nke isi ike d裹elu, ike d裹mma, d裹elu d裹elu, nkwng / soutgnke abrasion d裹elu, nkwng / soutgka nká, nkwng / soutgozone, nkwng / s裹ọkụ ọkụ na ezigbo ọkụ eletrik。