丁香色婷婷,国产精品我爱熟女,欧美精品和国产激情久久,中文字幕三区,精品人妻少妇丰满久久久av免,蜜桃精品免费久久久久影院,久久成年精品视频网站,亚洲精品少妇久久久久久,国产精品亚洲欧美,亚洲精品国产美女久久久

Ferrite core has the characteristics of high magnetic permeability and low loss at high frequency, and has the advantages of being easy to be made in mass production, stable performance, high mechanical processing performance, available in various shapes and low cost. It has been rapidly promoted and applied in photovoltaics, energy storage, new energy vehicles, communications, home appliances and other fields.