ETEC (Electronic cigarette Chain) is based on blockchain technology, and will integrate alliance chains and public chains, and add multi-chain mechanisms and cross-chain protocols to provide solid and innovative technical support for the electronic cigarette industry. On the one hand, ETEC absorbs the open and transparent advantages of the public chain, integrates into the smart contract of Ethereum, reduces the cost of business execution and makes the rules transparent, so that unfamiliar transaction subjects can trust each other; on the other hand, Electronic Cigarette Chain (ETEC ) absorbs the advantages of the alliance chain for privacy protection, and meets the privacy requirements of merchants and users for information and transactions.