TAC (Traceability Chain) utilizes the unique and immutable distributed ledger recording characteristics of blockchain to focus on building the world's largest traceability public chain, building underlying communication nodes, traceability cloud platforms, and distributed storage cloud services. TAC plays an indispensable role in the traceability chain ecosystem, serving as a carrier of value transmission, circulating between platforms, developers, enterprises, service institutions, and consumers, making the entire ecosystem healthier and more dynamic for development....