4399在线视频免费观看

建筑(zhu)工(gong)(gong)程(cheng)、水電暖安裝(zhuang)工(gong)(gong)程(cheng)、防腐保(bao)溫工(gong)(gong)程(cheng)、機(ji)電設備(bei)安裝(zhuang)工(gong)(gong)程(cheng)、園林(lin)綠化工(gong)(gong)程(cheng)、市政(zheng)(zheng)公(gong)用工(gong)(gong)程(cheng)、電力承(cheng)裝(zhuang)工(gong)(gong)程(cheng)、環保(bao)工(gong)(gong)程(cheng)、裝(zhuang)飾裝(zhuang)修工(gong)(gong)程(cheng)、公(gong)路(lu)工(gong)(gong)程(cheng)、鐵路(lu)工(gong)(gong)程(cheng)、市政(zheng)(zheng)道路(lu)工(gong)(gong)程(cheng)的施工(gong)(gong)；建筑(zhu)勞(lao)務分包(bao)。建筑(zhu)設備(bei)租(zu)賃及維修保(bao)養；機(ji)電設備(bei)（特殊設備(bei)除(chu)外(wai)）調試、檢修。（上述經(jing)營(ying)項目依法須經(jing)批(pi)準的項目，經(jing)相關部門批(pi)準后方可開展經(jing)營(ying)活動）