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Cheetah Mobile Inc. operates as an internet company in the People's Republic of China, the United States, Japan, and internationally. The company's utility products include Clean Master, a junk file cleaning, memory boosting, and privacy protection tool for mobile devices; Security Master, an anti-virus and security application for mobile devices; and Duba Anti-virus, an internet security application to protect users against known and unknown security threats and malicious applications. In addition, it offers mobile games comprising Piano Tiles 2, Rolling Sky, and Dancing Line; value-added products, such as PC and mobile products, as well as wallpaper, office optimization software, and others; E-Coupon vending robot, a reception and marketing robot; and multi-cloud management platform and overseas advertising agency service.