SEC (Super E-commerce Chain) is a blockchain-based e-commerce solution. The SEC will rely on the decentralization of blockchain, community governance, borderless and the globalization of digital currency, relying on the construction of super nodes to meet the user's requirements for the system, through the creation of smart contracts for buying and selling, and the establishment of dispute handling rules and a series of Ultimately, we hope to establish a healthy e-commerce system that benefits sellers, buyers and nodes, benefits e-commerce practitioners all over the world, and contributes to the application of blockchain.