全密封結構(gou)，無(wu)油(you)耗，免維護，綠色環保型(xing)產品，產品性能符合 EN81-1 要求， 每次動作后不需要人員調整開(kai)關(guan)打(da)桿垂直位置。

 Sealed without any oil leakage, free of maintenance. the are green productes, these buffers are produced and tested copmletely in conformity with EN81-1, It is not necessary to make any adjustment of the swicth activating rod when it is compressed.