1. Tooth Whitening Chewing Gum Group 4 members: Dolla Tan Goh Jia Qing(*) Tan Ying Yin Tee Xian Yang Wang Fang Fang Zhang Xuan(*) Zhou Jie (*) group leader

2. Introduction Assignee: Colgate Palmolive Company US Patent No.: 6,416,744 Title: Tooth Whitening Chewing Gum

3. Function Remove stain from the enamel surfaces of teeth Especially beneficial and convenient for use immediately after consuming stain-inducing foods, coffee, tea, red wine, and tobacco products Especially advantageous for use when tooth brushing is not possible or convenient. Pleasurable

4. Commercialization Beside cashier in supermarket and convenience store. Distribute free with purchase of cigarettes, tea etc. for limited time Advertisement Legalization Sponsoring health shows, sports teams……