After 6 years working in the Photovoltaic R&D department with new materials and products development, he accumulated rich knowledge about PV products including the detailed process of whole PV chain, each raw materials properties of PV modules and the PV system analysis. Then he turned into Product Marketing Manager, where he was in depth understanding of international marketing trend. Besides he was very familiar with mainstream competitive products and the advantages, disadvantages of each product. Moreover, he understood what kind of product was most attractive to customers.