Cheung Kong (Holdings) Limited ("Cheung Kong Holdings") is the flagship of the Cheung Kong Group, the leading Hong Kong based multi-national conglomerate. In Hong Kong alone, members of the Cheung Kong Group include Cheung Kong Holdings (stock code: 0001), Hutchison Whampoa Limited (stock code: 0013) and Power Assets Holdings Limited (formerly known as Hongkong Electric Holdings Limited) (stock code: 0006), which are constituent stocks of the Hang Seng Index; Cheung Kong Infrastructure Holdings Limited (stock code: 1038), CK Life Sciences Int'l., (Holdings) Inc. (stock code: 0775), Hutchison Telecommunications Hong Kong Holdings Limited (stock code: 0215), Hutchison Harbour Ring Limited (stock code: 0715) and TOM Group Limited (stock code:2383), which are companies listed on the Main Board of the Hong Kong Stock Exchange. The combined market capitalisation of the Cheung Kong Group's Hong Kong listed companies amounted to HK$747 billion as at 31 Dec, 2011. Cheung Kong Holdings is a property development and strategic investment company. The company is one of the largest developers in Hong Kong of residential, commercial and industrial properties. About one in seven private residences in Hong Kong were developed by the company. The company's long-standing policy is to continuously enhance quality and introduce innovations and initiatives to cater to changing needs and trends in the property market, with the aim of bringing quality living to our customers. Cheung Kong Holdings is the largest shareholder of Hutchison Whampoa Limited ("Hutchison Whampoa") holding a 49.97% interest. With origins dating back to the 19th century, Hutchison Whampoa is a leading international corporation which operates five core businesses in 53 countries: ports and related services; property and hotels; retail; energy, infrastructure, investments and others; and telecommunications. Cheung Kong Holdings is also the largest shareholder of CK Life Sciences Int'l., (Holdings) Inc. This company, of which Cheung Kong Holdings is a 45.31% shareholder, is engaged in the business of research and development, commercialization, marketing and sale of health and agriculture related products.