4399视频

電(dian)(dian)(dian)力(li)工(gong)(gong)(gong)(gong)程(cheng)咨詢、設計、電(dian)(dian)(dian)力(li)工(gong)(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)(gong)、機電(dian)(dian)(dian)工(gong)(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)(gong)、消防工(gong)(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)(gong)、建筑(zhu)工(gong)(gong)(gong)(gong)程(cheng)施(shi)工(gong)(gong)(gong)(gong)；高低壓成套設備及其材料的(de)研發、生(sheng)產(chan)和銷售；電(dian)(dian)(dian)氣(qi)設備、電(dian)(dian)(dian)力(li)變(bian)壓器、電(dian)(dian)(dian)纜、變(bian)電(dian)(dian)(dian)站及箱式變(bian)電(dian)(dian)(dian)站的(de)銷售及安裝(zhuang)調試(shi)(shi)、試(shi)(shi)驗。（依法須經(jing)批(pi)準(zhun)的(de)項目，經(jing)相關(guan)部門批(pi)準(zhun)后(hou)方可開展經(jing)營活動(dong)）