電子產品批發；通訊設備及配套設備批發；保安監控及防盜報警系統工程服務；監控系統工(gong)程安(an)裝服務(wu)(wu)(wu)；商(shang)品(pin)信息咨詢服務(wu)(wu)(wu)；軟件(jian)批(pi)發；計(ji)(ji)算(suan)機(ji)(ji)(ji)零配(pei)件(jian)批(pi)發；軟件(jian)服務(wu)(wu)(wu)；安(an)全技術防范產(chan)品(pin)批(pi)發；計(ji)(ji)算(suan)機(ji)(ji)(ji)網絡系(xi)統工(gong)程服務(wu)(wu)(wu)；計(ji)(ji)算(suan)機(ji)(ji)(ji)批(pi)發；網絡技術的研(yan)究(jiu)、開發；計(ji)(ji)算(suan)機(ji)(ji)(ji)技術開發、技術服務(wu)(wu)(wu)；電(dian)子產(chan)品(pin)零售(shou)；電(dian)線、電(dian)纜批(pi)發；廣播設(she)備及(ji)其配(pei)件(jian)批(pi)發；計(ji)(ji)算(suan)機(ji)(ji)(ji)零售(shou)；軟件(jian)開發；廣播系(xi)統工(gong)程服務(wu)(wu)(wu)；商(shang)品(pin)批(pi)發貿易（許可審批(pi)類(lei)商(shang)品(pin)除外）；安(an)全技術防范產(chan)品(pin)零售(shou)；軟件(jian)零售(shou)；安(an)全技術防范系(xi)統設(she)計(ji)(ji)、施工(gong)、維修(xiu)；電(dian)子設(she)備工(gong)程安(an)裝服務(wu)(wu)(wu)；計(ji)(ji)算(suan)機(ji)(ji)(ji)零配(pei)件(jian)零售(shou)。