4399免费视频

消防(fang)設(she)施工程施工。（依(yi)法須經批準的(de)項(xiang)目，經相關(guan)部(bu)門批準后方(fang)可開展經營活動，具體經營項(xiang)目以相關(guan)部(bu)門批準文件(jian)(jian)(jian)或許(xu)可證為準）一般項(xiang)目：鐵路(lu)運輸輔助活動；機(ji)械(xie)(xie)(xie)設(she)備研發(fa)(fa)；采礦行業高效節能(neng)技術(shu)(shu)研發(fa)(fa)；軌道交(jiao)通專業設(she)備、關(guan)鍵系統及部(bu)件(jian)(jian)(jian)銷售(shou)(shou)(shou)；水泥制(zhi)品(pin)銷售(shou)(shou)(shou)；橡膠(jiao)制(zhi)品(pin)銷售(shou)(shou)(shou)；普(pu)通機(ji)械(xie)(xie)(xie)設(she)備安裝服務；軌道交(jiao)通工程機(ji)械(xie)(xie)(xie)及部(bu)件(jian)(jian)(jian)銷售(shou)(shou)(shou)；特制(zhi)設(she)備銷售(shou)(shou)(shou)；礦山機(ji)械(xie)(xie)(xie)銷售(shou)(shou)(shou)；機(ji)械(xie)(xie)(xie)設(she)備銷售(shou)(shou)(shou)；機(ji)械(xie)(xie)(xie)零(ling)件(jian)(jian)(jian)、零(ling)部(bu)件(jian)(jian)(jian)銷售(shou)(shou)(shou)；高性能(neng)纖維及復(fu)合材料銷售(shou)(shou)(shou)；新材料技術(shu)(shu)研發(fa)(fa)。