4399视频

電(dian)力(li)工(gong)程(cheng)、機電(dian)設(she)備(bei)(bei)安(an)裝(zhuang)工(gong)程(cheng)、消防設(she)施工(gong)程(cheng)、電(dian)子(zi)與智(zhi)能化工(gong)程(cheng)、建筑智(zhi)能化工(gong)程(cheng)、計(ji)算機網絡工(gong)程(cheng)、電(dian)氣工(gong)程(cheng)；中央(yang)空(kong)(kong)調系(xi)統(tong)及(ji)配套產品、凈化系(xi)統(tong)及(ji)配套產品的設(she)計(ji)、研(yan)發、銷售、安(an)裝(zhuang)；圖文設(she)計(ji)、制作，計(ji)算機軟件(jian)研(yan)發；電(dian)氣設(she)備(bei)(bei)、配電(dian)柜(ju)、配電(dian)箱的組(zu)裝(zhuang)、銷售、安(an)裝(zhuang)及(ji)維修；工(gong)業自動(dong)控(kong)制系(xi)統(tong)制造；樓宇設(she)備(bei)(bei)自控(kong)系(xi)統(tong)工(gong)程(cheng)服務、物聯網服務；空(kong)(kong)氣凈化設(she)備(bei)(bei)、儀(yi)(yi)器(qi)(qi)儀(yi)(yi)表、水暖閥(fa)門(men)(men)、智(zhi)能環保設(she)備(bei)(bei)、消防設(she)備(bei)(bei)、中央(yang)空(kong)(kong)調設(she)備(bei)(bei)及(ji)配件(jian)、空(kong)(kong)調用(yong)傳(chuan)感器(qi)(qi)、交流電(dian)變頻設(she)備(bei)(bei)、電(dian)子(zi)元器(qi)(qi)件(jian)、電(dian)線電(dian)纜、五(wu)金產品、計(ji)算機及(ji)輔助設(she)備(bei)(bei)銷售。（依法須經批準的項(xiang)目，經相關部門(men)(men)批準后方可開展經營活動(dong)）