全密封結構(gou)，無油耗，免維護，綠色(se)環保型產品，產品性能符合 EN81-1 要求， 每(mei)次動作(zuo)后不需要人(ren)員調(diao)整開關打桿垂(chui)直位(wei)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.