Zheng Jiong serves as R&D Manager in Technical Management Department of Yingli Energy Development Co., Ltd. Mr. Zheng has nearly 15 years of research experience in high performance photovoltaic module technology. He used to work on thin film amorphous silicon solar module. He has long been engaged in research of crystalline silicon PV module technology from 2013. Mr. Zheng has won 1 provincial science and technology progress award and 6 national invention patents.