With the increasing application of flow chemistry, the reaction system conditions are becoming more and more complex, and the types of raw materials transported are becoming more and more diverse. When using traditional high-pressure constant flow pumps, due to their special structure, the inlet and outlet one-way valves are often contaminated and cannot work properly, resulting in unstable and inaccurate feed flow. At the same time, when encountering viscous raw materials such as glycerol, the one-way valve is difficult to close smoothly and loses its function, seriously restricting the transportation of viscous raw materials. Due to the reaction between gemstones or ceramic plunger rods in traditional high-pressure constant flow pumps and strong corrosive acids, it is impossible to transport materials such as strong corrosive acids. In order to adapt to the rapid development of flow chemistry applications, expand the scope of applications, transport various types of raw materials, and provide a strong "heart" for flow chemistry, Oushi Sheng Company has launched a valve free dual head high-pressure injection pump, which we named "Liquid Supply Cube" and the English name "L-cube".