Xuelong Hao, professor and senior engineer of National Center of Analysis and Testing for Nonferrous Metals and Electronic Materials, Guobiao (Beijing) Testing & Certifification Co., Ltd., received doctor of engineering in material science engineering institute of Beihang university in 2011. He has published more than 40 papers (including more than 20 SCI/EI) in journals such as LANGMUIR, RARE METALS, International Journal of Photoenergy, Frontiers In Materials, Int. J. Electrochem and other journals, 3 books, more than 20 national patents, and edited and participated in the drafting of nearly 20 national and industry standards.