Compared with abrasive abrasive belts, sandpaper developed relatively late and encountered some difficulties at the beginning of its development.

Emery cloth to develop, the opportunity is in 1959 to 10 anniversary of the founding of the people, then decided to manufacture 17 mig fighter shenyang dawn machinery and aviation industry 9 under the help of the Soviet union experts assumed jointly do this project, later in the process of manufacturing of aircraft engine, engine blade using grinding wheel was unable to complete the processing. Soviet experts suggested sand belts. In this case, Zhengzhou two sand and three mill took the responsibility. With the help of the State, experts in the Soviet Union and at home, unfamiliar with the sandbelt, found the English book Modern Coated Abrasions in the British Embassy. This book opened the door for China to the world’s advanced coated abrasives. Through the study of this book, Chinese experts began to understand the sand belt, also began to trial production of sand belt. In 1960, China’s first circular sand belt was born in Shanghai, the birthplace of Shanghai sand wheel Factory.

At the end of the cultural Revolution in 1973, the Ministry of First Aviation received an invitation letter from the University of Technology in Brunswick, West Germany, stating that a seminar would be held in 1973 in Brunswick, West Germany, to be attended by 33 countries including Britain, the United States, France and West Germany, focusing on “the development and application of abrasive abrasive belts and CBN superhard materials”. This is the second opportunity for the development of China’s sandbelt. When the Cultural Revolution was about to pass, the turning point with world vision believed that during the Cultural Revolution, the development of Advanced technology of Chinese team was in a state of closed ears. It was necessary to take this opportunity to understand the development of advanced technology of foreign countries. Therefore, the development of Chinese seized the opportunity, then sent by the three grinding, sand and delegation, Shanghai machine tool plant of three parties together to send to Germany to participate in the senior technical seminars, in the meeting, China saw abroad high mechanization, automation and the comprehensive quality control system of abrasive belt production line and quality of abrasive belt products.

In 1978, when China implemented reform and opening up, the First batch of major technology import projects of the central government included “development and introduction of broadband production technology project” in the plan, and pointed out that the project would be implemented by Zhengzhou No.2 Sand. Second sand party Committee and its leadership also attach great importance to this. All kinds of equipment introduced in the 1960s are backward, but there are many problems to introduce new technology, such as money problem, for example, the introduction of wide sand belt project had to face many uncertainties, such as how big the sand belt market is? Can we find nearly 100 kinds of raw materials for producing sand belt in China? How to digest and absorb the introduced advanced technology in China? How many years will it take to pay off such a large investment? Among them, there is also a very sensitive issue, after the successful introduction of the second sand to the brothers factory will be open? Not open, outside criticism two sand conservative, open is equal to two sand spend money for others to do wedding clothes!

In May 1978, at the last meeting of the Party Committee to discuss the project of introducing wide sand belt, the development direction of sand belt was decided.

Now, grinding material sand belt production has been realized mechanization, automation, in lamenting the development of sand belt results at the same time, we can not forget to take their own future as a bet for sand belt business dedication decision makers