Technological innovation is the key to core competitiveness. China Digital has built a strong IT R&D and operation team, with nearly 2000 software R&D personnel. It is the chairman of the "Internet Information Services Industry Promotion Working Group of Changfeng Alliance" of the Ministry of Science and Technology.

Magnetic powder core is a soft magnetic material made by mixing and pressing ferromagnetic particles with insulating media. Due to the small size of ferromagnetic particles (used at high frequencies ranging from 0.5 to 5 microns) and being separated by non magnetic electrical insulating film materials, on the one hand, they can isolate eddy currents, making the material suitable for higher frequencies;

MPP magnetic core: using ampere turns of 200, 50Hz~1kHz, e: 125~500; 1 ~ 10kHz； e ：125 ~ 200； 100kHz：e： 10 ~ 125