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Feb 1 (Reuters) - Hong Kong shares fell on Monday after an official survey showed China's factory activity shrank more than expected in January and by its fastest pace in nearly 3-1/2 years.
The Hang Seng index fell 0.5 percent to end at 19,595.50 points, while the China Enterprises Index lost 1.2 percent to 8,144.85. (Repoerting by Samuel Shen and Pete Sweeney; Editing by Kim Coghill)