"3m" is a trademark of Minnesota Mining and Manufacturing Company. Founded in 192 and headquartered in St. Paul, Minnesota, USA, 3M Company is a world-famous multinational enterprise with diversified products, mainly developing, manufacturing and operating its own products. In its nearly 1-year history, it has continuously innovated and developed more than 6, kinds of products, covering industries, chemicals, electronics, electricity, communications, transportation, automobiles, aviation, medical care, safety, architecture, cultural and educational offices, commerce and so on. 3M has branches in more than 6 countries and regions around the world, with annual sales exceeding 15.6 billion US dollars. 3M Company is not only one of the 3 components of Dow Jones Industrial Stock Index, but also rated as one of the Fortune 5 companies over the years. 3M China Co., Ltd. was established in Shanghai in 1984, and is a wholly-owned subsidiary of 3M. It has offices in Shanghai, Beijing, Guangzhou, Chengdu, Shenyang, Fuzhou and Wuhan, and has two modern factories, technical centers and customer service centers.