全密封結構，無油耗(hao)，免(mian)維護，綠(lv)色環保(bao)型(xing)產品，產品性能符合 EN81-1 要(yao)求(qiu)， 每次動作后不需要(yao)人員調(diao)整開關打桿垂直位置(zhi)。

 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.