Mr. Chang is a well-known figure in Southeast Asia‘s digital asset trading market. He has been involved in the digital asset trading market since 2015 and has completed transactions of up to more than a million per day in the Southeast Asia market. His clients are mainly legal entities, high net worth asset customers, exchanges and other specific objects. He has a good international over-the-market supplier relationship. He had founded E&B in 2019 to buy and sell digital assets for Taiwan's first store on  the street and provide marketing resources for blockchain companies and projects.