On April 15th , 2016, Mr. FRANKSCHU, co-founder of SONNGIE, was invited to participate in the INVEST exhibition, Germany's largest financial investment exhibition. A large number of private investors, bank managers, asset management and financial services providers also attended the exhibition. Nearly 300 investment-related lectures and seminars were held, bringing together a large number of professional practitioners and well-known financial experts. SONNGIE and WIN ENERGIE AG reached an initial cooperation intention, and two parties will use their respective advantages in energy conservation to conduct in-depth cooperation in environmental protection.