4399在线视频免费观看

光電(dian)技(ji)術(shu)開發(fa)；LED顯(xian)示(shi)(shi)屏、液晶顯(xian)示(shi)(shi)屏、有機(ji)發(fa)光二極管(guan)（OLED）、數碼視(shi)(shi)像(xiang)(xiang)顯(xian)示(shi)(shi)單元、數碼顯(xian)示(shi)(shi)投(tou)影光機(ji)、圖像(xiang)(xiang)拼接控(kong)制器、非專控(kong)通(tong)訊(xun)設(she)備、音響設(she)備、電(dian)子產(chan)品、環保設(she)備、監(jian)控(kong)設(she)備、光電(dian)產(chan)品、節能產(chan)品、燈具、照(zhao)明設(she)備的設(she)計、開發(fa)、生產(chan)、銷售、安(an)裝、維修、租(zu)賃；計算機(ji)系統(tong)(tong)(tong)集(ji)成(cheng)(cheng)；網絡(luo)系統(tong)(tong)(tong)集(ji)成(cheng)(cheng)；音視(shi)(shi)頻(pin)系統(tong)(tong)(tong)集(ji)成(cheng)(cheng)；綜合布線；城(cheng)市及(ji)道路照(zhao)明工程(cheng)、電(dian)子與智能化工程(cheng)；計算機(ji)軟硬件開發(fa)、技(ji)術(shu)咨(zi)詢服(fu)務。