Mina, with its constant 22KB blockchain, is the world's lightest ZK public chain; Celo focuses on mobile inclusive finance, building a low-fee, second-level payment network; RVN uses ASIC-resistant algorithms to protect mining fairness and focuses on on-chaining of real-world assets; Mask builds a privacy channel from Web2 to Web3, achieving data autonomy and seamless interoperability with the on-chain ecosystem. These four companies have established unique core barriers in ZK technology, mobile payments, fair issuance, and social privacy, each leading the way.