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Telephone system,Cisco ip phone,SPA 300,SPA 500,Telephone installation,Telephone Maintenance,Auto-at
Telecom Services PowerTech know that a high level, strongly, reliability and performance internet's network is the main communication in business today. Build on the lastest and relialility technology. Powertech provide broadband Service, MPLS IP-VPN, IPL
www.telephonesystem.com.hk
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