CHE is the official certificate of ERC20 digital assets issued by CHEX FOUNDATION, a global non-profit block chain foundation. CHE passport is mainly used to construct and motivate global CHE community, platform ecology, project incubation, public welfare project support. Thus, the community ecological system with CHEX FOUNDATION as the core is established. As an important part of CHE ecosystem, CHAOEX trading platform provides a carrier for the implementation of CHE application scenarios.