Minnesota in the United States in 1902, five young people established a mining company double port city - 3 m (Minnesota mining and manufacturing company), only the early mining ore and soon discovered ore have better prospects for development, which began to make sandpaper. In 1910, the company moved to the head office is located in Minnesota, Sao Paulo, and in 1914 launched the first product Three Mite emery cloth, abrasive products division to become the earliest 3 m products division. 3 m innovation process in the field of grinding material. In 1921, the world's first waterproof abrasive sandpaper Wetordry and register the birth of 3 m patents, grinding for industry started a new era of [1]. Then 3 m has developed a series of high-tech products in the field of grinding, 3 m non-woven series products (pausing Brite), 3 m pyramid abrasive products (Trizact), 3 m series products of ceramic abrasive (Cubitron I, Cubitron II) such as the latest grinding technology products to the global surface treatment technology, as well as cutting, grinding, polishing industry has brought great changes.