Hutchison Telecommunications Hong Kong Holdings Limited is a telecommunications operator in Hong Kong. It operates GSM dual-band, 3G, 4G LTE and 5G mobile services in Hong Kong and Macau under the licensed global Three brand. It was listed on the Stock Exchange of Hong Kong on 8 May 2009 by way of introduction from the spin-off of Hutchison Telecommunications International. It is now a subsidiary of CK Hutchison Holdings. In October 2017, Hutchison Telecommunications Hong Kong Holdings Limited disposed of its fixed-line subsidiary Hutchison Global Communications (HGC) to Asia Cube Global Communications Limited for HK$14.5 billion (US$1.86 billion) to focus on mobile business.

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