1. Initial stage. From the 1960s to the mid-1980s, China established the production capacity of basic varieties of electromagnetic lines on the basis of self-reliance, and possessed the infrastructure and professional talents to develop new varieties, which created necessary conditions for the development from the late 1980s to the 1990s.

2. Rapid development period. In the 1990 s, electromagnetic wire industry enterprises gradually from industrial countries has introduced the advanced production of electromagnetic wire of a complete set of technology and equipment, from raw material (wire core, insulation materials, etc.), production equipment, wire drawing machine, paint charter and around, etc.) to the finished product testing equipment, electromagnetic wire production capacity and technical level gradually into the world advanced level.

3. Industrialization stage. In the 21st century, with the rapid development of domestic electric power industry, home appliance industry, electronic information, communication industry, electromagnetic line production enterprises in recent years rapidly expand the scale of production. Old enterprises have been eliminated and new ones have been created. A new pattern of electromagnetic lines has been basically formed in China. A number of large enterprises with strong technical strength have emerged in the industry, gradually growing into the industry leader.

Although China's electromagnetic line industry started late, but the market space is large, the labor cost is low, so that the electromagnetic line production enterprises obtain rapid development. In this stage, China's electromagnetic wire manufacturers have gradually narrowed the technological gap with advanced industrial countries by introducing advanced equipment and technology and making technological breakthroughs through independent research and development, and the technological process of some products has reached the international advanced level.