The In-Cabinet type coolant distribution unit (CDU), with a rated cooling capacity of 900kW. The system adopts clamp connection, which is convenient and quick to install. Dual pump redundancy design, easy to replace and maintain, high reliability. It can be maintained without shutting down when the pump/power fails or the filter is clogged. The system has a comprehensive real-time monitoring function of operating parameters. The communication interface of upper computer adopts 2 redundant RS485 & 2 redundant RJ45, and the de-fault communication protocol Modbus RTU & Modbus TCP/IP. Also it can be customized and modified according to customer requirements.