Abstract: This paper focuses on a kind of extremely thin oriented electrical steel with high frequency, whose thickness is 0.10 mm(0.08 mm), 0.05 mm, 0.03 mm, width is below 350 mm, and the frequency is between 400 and 3000 Hz. The product is mainly imported. In recent years, some enterprises have developed a kind of raw material of HiB oriented electrical steel without the glass film, and put it into use, which achieved obvious effect. The research shows that the appearance of the raw material of HiB oriented electrical steel without glass film changes the previous production process, mainly solves the problem of "bottle-neck" of removing surface coating and bottom layer of glass film, and reduces a working procedure. It lays an important foundation for stable production of extremely thin oriented electrical steel to realize localization and reduce import.

Key words: extremely thin oriented electrical steel, production, technological change, demand analysis and forecast