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Main office

Telephone: 852 90908321 (Hong Kong) , 86 15017974652 (China ) Address:2/F Dah Sing Life Building ,99 Des Voeux Road Central Hong Kong. sales@ciasys.com

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Telephone:+852 96495978 (Hong Kong)  Address:2/F Dah Sing Life Building ,99 Des Voeux Road Central Hong Kong. noc@ciasys.com