4399免费视频

電(dian)(dian)(dian)(dian)力(li)工(gong)(gong)程(cheng)(cheng)(cheng)、機(ji)電(dian)(dian)(dian)(dian)設(she)(she)(she)備(bei)(bei)(bei)安裝工(gong)(gong)程(cheng)(cheng)(cheng)、消防(fang)設(she)(she)(she)施工(gong)(gong)程(cheng)(cheng)(cheng)、電(dian)(dian)(dian)(dian)子與智(zhi)能化(hua)(hua)工(gong)(gong)程(cheng)(cheng)(cheng)、建筑智(zhi)能化(hua)(hua)工(gong)(gong)程(cheng)(cheng)(cheng)、計算(suan)機(ji)網(wang)絡工(gong)(gong)程(cheng)(cheng)(cheng)、電(dian)(dian)(dian)(dian)氣工(gong)(gong)程(cheng)(cheng)(cheng)；中央空調系(xi)統及配(pei)(pei)套產(chan)品、凈化(hua)(hua)系(xi)統及配(pei)(pei)套產(chan)品的(de)設(she)(she)(she)計、研發、銷售(shou)、安裝；圖文設(she)(she)(she)計、制作，計算(suan)機(ji)軟件(jian)(jian)研發；電(dian)(dian)(dian)(dian)氣設(she)(she)(she)備(bei)(bei)(bei)、配(pei)(pei)電(dian)(dian)(dian)(dian)柜(ju)、配(pei)(pei)電(dian)(dian)(dian)(dian)箱的(de)組裝、銷售(shou)、安裝及維修(xiu)；工(gong)(gong)業自動控(kong)(kong)制系(xi)統制造(zao)；樓(lou)宇設(she)(she)(she)備(bei)(bei)(bei)自控(kong)(kong)系(xi)統工(gong)(gong)程(cheng)(cheng)(cheng)服務、物聯(lian)網(wang)服務；空氣凈化(hua)(hua)設(she)(she)(she)備(bei)(bei)(bei)、儀(yi)器(qi)儀(yi)表、水暖閥門(men)、智(zhi)能環保(bao)設(she)(she)(she)備(bei)(bei)(bei)、消防(fang)設(she)(she)(she)備(bei)(bei)(bei)、中央空調設(she)(she)(she)備(bei)(bei)(bei)及配(pei)(pei)件(jian)(jian)、空調用傳感器(qi)、交流(liu)電(dian)(dian)(dian)(dian)變頻設(she)(she)(she)備(bei)(bei)(bei)、電(dian)(dian)(dian)(dian)子元器(qi)件(jian)(jian)、電(dian)(dian)(dian)(dian)線電(dian)(dian)(dian)(dian)纜(lan)、五金產(chan)品、計算(suan)機(ji)及輔助設(she)(she)(she)備(bei)(bei)(bei)銷售(shou)。（依法須(xu)經批準的(de)項目，經相關部門(men)批準后方可(ke)開展經營活動）