全密(mi)封結構，無(wu)油耗，免維護，綠色環(huan)保型產(chan)品(pin)，產(chan)品(pin)性能符合 EN81-1 要求(qiu)， 每(mei)次動作后不(bu)需要人(ren)員調(diao)整(zheng)開關打桿垂直位置。

 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.