Malleable long history of development. Abroad widely recognized in 1720 by the French Liou Mi produced a white heart malleable, people call Offa. 1831 Americans produced black heart malleable, people call the United States and France, this method is currently widely used ferrite malleable iron production process. In fact, as early as the production of Magang is our Chinese people, the archaeologists found proof ferrite plus group flocculent graphite malleable. Also in Luoyang and Daye also repeatedly found ancient malleable arms, though the lack of written records, but according to archaeological finds prove that China's production of malleable than in Europe and other countries for a thousand years earlier. Because of a long period of feudal society, science and technology taken seriously, not only by the development of the foundry industry, and some highly technical processes, such as production technology malleable but was drowned lost. Until 1933, it was learned malleable technology introduced into China from Japan. After the 1950s to produce malleable before they get rapid development. The mid-1980s to the 1990s is the development of China Magang industry peak date, Magang pieces yield jump bureau in the world.
