4399在线视频免费观看

批發、零售(shou)(shou)：電(dian)(dian)(dian)氣(qi)設(she)備、電(dian)(dian)(dian)子產品、監控(kong)設(she)備、五金交電(dian)(dian)(dian)、電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)子元器件、電(dian)(dian)(dian)線(xian)電(dian)(dian)(dian)纜、絕(jue)緣材料、防火材料、鋼板鋼材、日用品、百貨、勞保用品、服(fu)裝鞋帽、金屬制品、工(gong)(gong)藝美術(shu)品；電(dian)(dian)(dian)子產品技術(shu)開發、技術(shu)咨詢；計(ji)算機軟件技術(shu)開發及(ji)銷售(shou)(shou)；電(dian)(dian)(dian)力(li)設(she)施(shi)承(cheng)裝、承(cheng)修、承(cheng)試類業務；電(dian)(dian)(dian)力(li)工(gong)(gong)程施(shi)工(gong)(gong)總(zong)承(cheng)包。