# Key features that make SEI unique By [Privacy in Web3](https://paragraph.com/@mrpullback) ยท 2023-03-17 --- SEI is a unique Layer 1 blockchain that is specifically designed for order book trading. It is the first blockchain platform to have a built-in Central Limit Order Book (CLOB) module optimized for speed, stability, and economy. I would like to draw your attention to some of the key features that make Sei unique: 1. Built-in CLOB module: SEI has a built-in CLOB module that enables high-speed order matching and execution, making it ideal for trading in fast-paced markets. This CLOB module is optimized for stability and economy, which ensures that the blockchain remains secure and cost-effective. 2. Focus on Layer 1: SEI is a Layer 1 blockchain, which means that it is a standalone blockchain platform that can handle transactions and execute smart contracts. This makes it ideal for high-frequency trading, as there is no need to interact with other blockchain platforms. 3. High-speed transaction processing: SEI is designed to process transactions at a high speed, which is essential for order book trading. The blockchain can handle up to 10,000 transactions per second, which is much faster than other blockchain platforms. 4. Scalability: SEI is highly scalable, which means that it can handle a large number of users and transactions without slowing down. This makes it ideal for trading platforms that require high throughput. 5. Decentralization: SEI is a decentralized blockchain platform, which means that there is no central authority controlling the platform. This ensures that the platform is transparent, secure, and resistant to censorship. Overall, SEI is a unique blockchain platform that is specifically designed for order book trading. Its built-in CLOB module, high-speed transaction processing, and focus on Layer 1 blockchain make it an ideal platform for high-frequency trading. Find more in: [https://twitter.com/SeiNetwork](https://twitter.com/SeiNetwork) [https://seiblockchain.com/](https://seiblockchain.com/) [https://www.seinetwork.io/](https://www.seinetwork.io/) --- *Originally published on [Privacy in Web3](https://paragraph.com/@mrpullback/key-features-that-make-sei-unique)*