4399免费视频

電(dian)子、光纖(xian)、生物科技(ji)、節能環(huan)(huan)保(bao)、環(huan)(huan)保(bao)科技(ji)領域內技(ji)術(shu)開發、咨詢及(ji)服(fu)務(wu)(wu)；機電(dian)產(chan)品、不銹鋼(gang)制品、儀表儀器銷(xiao)(xiao)售及(ji)服(fu)務(wu)(wu)；建(jian)(jian)筑(zhu)勞務(wu)(wu)服(fu)務(wu)(wu)；建(jian)(jian)筑(zhu)機械、機電(dian)設(she)備(bei)(bei)租賃；機電(dian)安裝(zhuang)(zhuang)工(gong)(gong)程(cheng)(cheng)(cheng)、空氣凈化(hua)工(gong)(gong)程(cheng)(cheng)(cheng)、建(jian)(jian)筑(zhu)裝(zhuang)(zhuang)修裝(zhuang)(zhuang)飾(shi)工(gong)(gong)程(cheng)(cheng)(cheng)、建(jian)(jian)筑(zhu)智(zhi)能化(hua)工(gong)(gong)程(cheng)(cheng)(cheng)、消防設(she)施工(gong)(gong)程(cheng)(cheng)(cheng)、環(huan)(huan)保(bao)工(gong)(gong)程(cheng)(cheng)(cheng)、管(guan)道工(gong)(gong)程(cheng)(cheng)(cheng)、容器安裝(zhuang)(zhuang)工(gong)(gong)程(cheng)(cheng)(cheng)的(de)(de)設(she)計、安裝(zhuang)(zhuang)、施工(gong)(gong)、咨詢；建(jian)(jian)筑(zhu)材(cai)料、無塵無菌凈化(hua)設(she)備(bei)(bei)及(ji)相(xiang)關(guan)(guan)機電(dian)、儀控設(she)備(bei)(bei)、構配件的(de)(de)生產(chan)、組裝(zhuang)(zhuang)設(she)計、咨詢、調試、維修及(ji)銷(xiao)(xiao)售；建(jian)(jian)筑(zhu)工(gong)(gong)程(cheng)(cheng)(cheng)分包；貨物或技(ji)術(shu)進(jin)出口（國家(jia)禁止或涉及(ji)行政審批的(de)(de)貨物和技(ji)術(shu)進(jin)出口除(chu)外）（依法須經批準(zhun)的(de)(de)項目，經相(xiang)關(guan)(guan)部門批準(zhun)后方(fang)可開展經營(ying)活動）