We provide you with precise, pulse free, and high-pressure delivery of trace liquids, with a minimum measurement of 0.01 μ L/min, a maximum measurement of up to 10000 μ L/min, and a maximum delivery pressure of 10000 psi. This series of pumps has the function of constant pressure delivery, and the constant temperature option ensures that its accuracy is not affected by external temperature changes when delivering at extremely low flow rates, with the function of flow gradient delivery. A single pump can simultaneously implement joint control over three other pumps.