telecommunications service provider 于 Tai Hang

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China Unicom Global Limited

Tsim Sha Tsui, Kowloon Hong Kong

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3Xpress

Tsing Yi, New Territories Hong Kong

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Telecom Digital

Tsuen Wan, New Territories Hong Kong

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3

Wang Tau Hom, Kowloon Hong Kong

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3Xpress

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INOX COMMUNICATION NETWORK LTD

Yau Ma Tei, Kowloon Hong Kong

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電訊盈科 圓洲角機樓

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PCCW Training And Development Centre