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There is a story in elementary school textbooks titled \"The Crow and the Water.\" In this story, the crow managed to get water out of a bottle by dropping stones into it. In fact, similar situations occur often in human life as well. When productivity was low, our ancestors invented many things that brought great convenience to daily life; whether it was water wheels or the ancient system of well fields, all of these were designed to help people obtain water. With the improvement in productivity and the development of technology, water pumps were invented – a significant breakthrough in the history of technological advancement, enabling water to be pumped to higher places. What is a water pump? A water pump is a machine that transports liquids or increases their pressure. It transfers the mechanical energy of a prime mover or other external energy to the liquid, thereby increasing its energy level. It is primarily used for transporting liquids such as water, oil, acids, bases, emulsions, suspensions, and liquid metals; it can also be used to transport mixtures of liquids and gases, as well as liquids containing suspended solids. The technical parameters used to evaluate the performance of water pumps include flow rate, suction lift, head, shaft power, hydraulic power, and efficiency ； Based on different working principles, they can be classified into types such as positive displacement pumps and vane pumps. A positive displacement pump transfers energy by utilizing changes in the volume of its working chamber ； A vane pump operates by utilizing the interaction between rotating vanes and water. Pumps are also widely used in modern work and daily life; the water in the pipes we use on a regular basis relies on pumps to function. In addition to urban water supply, pumps come in many different types depending on the specific needs of various industries. Due to different applications, different liquid media to be transported, and varying ranges of flow rates and head pressures, its structural design naturally varies as well, along with the materials used. In general, it can be applied in the following industries. 1. Urban water supply 2. Sewage systems 3. Civil and construction systems 4. Agricultural irrigation systems 5. Power plant systems 6. Chemical industry systems 7. Petroleum industry systems 8. Mining and metallurgy systems 9. Light industry systems 10. Shipbuilding systems. Therefore, pumps have now become an essential element of productivity worldwide, and their production and sales volumes are increasing year by year. To help those in need find the most suitable pump products, China Net Warehouse Group established a specialized industry website in 2016 – the China Pump Industry Network, a professional B2B trading platform that provides convenience for more enterprises and customers.