In today's world where electronic waste is piling up like mountains, discarded old circuit boards, like forgotten "urban minerals", contain precious metals such as gold, silver and copper, as well as reusable materials like plastic and fiberglass. The emergence of complete sets of water separation and recycling equipment for used circuit boards not only solves the worldwide problem of electronic waste treatment, but also redefines the technological boundaries of resource recycling with its environmentally friendly and efficient characteristics. This set of equipment represents not only a breakthrough in technology, but also a profound reflection and innovative practice of mankind on the development model of industrial civilization. Water separation and recovery technology, with its unique advantage of physical separation, avoids the secondary pollution caused by traditional incineration or acid washing. By applying the principle of water flow dynamics and sorting based on the density differences of various materials, efficient separation of metals and non-metals has been achieved. This process is like performing a "painless surgery" on electronic waste, preserving the value of the materials while minimizing the harm to the environment to the greatest extent. The practice of a certain environmental protection enterprise in Germany shows that after adopting water separation technology, the recovery rate of metals in circuit boards can reach over 98%, far exceeding the 75% of traditional methods. This nearly perfect resource recovery rate demonstrates the powerful empowerment of technology for environmental protection. From a more macroscopic perspective, water separation and recovery equipment builds a complete resource recycling ecosystem. The separated metals re-enter the industrial production chain, while the non-metallic parts are transformed into building materials or other products, truly achieving a closed-loop flow from cradle to cradle. A study by the University of Tokyo in Japan shows that for every one ton of used circuit boards recycled, it is equivalent to reducing the mining of 200 tons of primary ore. This geometrically progressive resource-saving effect makes water separation technology an effective means to alleviate the global pressure of resource depletion. Today, with resources becoming increasingly scarce, this technology undoubtedly offers a practical and feasible solution for sustainable development. The profound significance of water separation and recycling technology lies in its redefinition of the ethical foundation of industrial civilization. The traditional linear economic model of "acquisition - manufacture - waste" is being replaced by a circular model of "design - use - recycling - regeneration". The European Commission particularly pointed out in the Circular Economy Action Plan that electronic waste recycling technology is a key fulcrum for promoting the green transformation. As a major producer and consumer of electronic products, China's breakthroughs in water separation and recycling technology in recent years not only demonstrate its strength in scientific and technological innovation but also highlight the environmental protection responsibility of a responsible major country. When sets of water separation equipment are put into operation in various places, what we see is not only the operation of the machines, but also a vivid practice of a new type of industrial ethics. Behind the seemingly professional term "complete set of equipment for water separation and recycling of waste circuit boards" lies humanity's wise exploration of sustainable development. It tells us that the power of technology lies not only in creating new products, but also in rediscovering the value of old things. The progress of civilization is not only reflected in the improvement of production capacity, but also in the transformation of attitudes towards resources. When every used circuit board can be reborn through technological means, we will be one step closer to a future where humans and nature coexist in harmony. This might be the most valuable enlightenment that water separation and recycling technology offers us: Empowered by technology, the rebirth of resources is not a dream but a reality that is taking place.