Beijing TuDuoDuo e-commerce Co., Ltd (TuDuoDuo for short) is the core subsidiary of Guolian Co., Ltd. (603613.sh) and the first industrial Internet platform among various duoduo Internet platform. The company takes raw material/industrial product B2B e-commerce transaction service, digital supply chain service, industry digitization service and industry data service as its primary business, focusing on promoting the deep integration between new technology and traditional industry, such as Internet, Internet of things, big data, intelligent manufacturing and blockchain. In the rapid development, TuDuoDuo actively uses current valued system of the industrial chain, cooperates with the core enterprises of industry chain,industry association, industrial park and the government etc, jointly advances the construction of multi-sided cooperation mode, such as digital trading system, sub terminal service system, digital cloud factory, digital park and digital mine etc. Now the main running industry chain contains: pigment industry chain, Titanium industry chain, solvent industry chain, resin industry chain, lubricating oil industry chain, carbon black industry chain, packaging industry chain, medical industry chain and so on. Among the service of TuDuoDuo, B2B e-commerce mainly comprise: self-owned e-commerce,third-party e-commerce who joined us, cross-border e-commerce and SaaS. The self-owned e-commerce primary in the way of collective purchasing, group buying, bidding auction,livestream with products to achieve some valued objectives such as organizing orders quickly,compress the transaction link, improve the efficiency of procurement and sales, and help upstream and downstream enterprises reduce costs and increase efficiency. The third-party e-commerce is based on the platform opening plan, inviting the advantageous enterprises of each industry chain to join our platform, through the flagship store, spot listing system, summary auction and other mature function construction, helping merchants to develop the industrial products online marketing system. On the foundation of the self-owned platform and third-party platform operations, cross-border e-commerce is a integrated service platform, which concentrate on developing overseas users for partner companies and conducting overseas sourcing. For the purpose of promoting the global industry chain synergy efficiency improvement jointly through digitalization of cross-border transactions. SaaS service is mainly a service combination system which based on e-commerce transaction, delivery and information interaction requirements such as online order, online payment with electronic signature, cloud ERP, video authentication, cloud conference and other modules.