In this era when electronic waste is piling up like a dark tide, the fate of every tiny circuit board has surpassed the simple issue of retention or disposal. The silent flow of gold and silver wires within their heavy bodies is actually calling for the pulse of a circular economy. Facing this pile of electronic waste that contains countless treasures but resembles a mountain of rubbish, how can we unlock the secrets of its precious metals? The ingenious technological key to this is called the complete set of water selection and recycling equipment for waste circuit boards. This green heavyweight uses its systematic order and precise processes to perform a transformation magic on waste materials. The crusher first "crushes them to pieces", turning complex circuit boards into tiny fragments, making them easier to screen accurately. The key lies in the "water selection core" coming into play - the water flotation tank becomes a shrewd "density selection stage". By skillfully adjusting the density solution, high- and low-density materials can each follow their own path: light plastic flakes float to the surface and are collected by rotating scrapers, like discarded gauze; while higher-density metal particles sink to the bottom of the tank, as if recognizing their own exclusive track under the gravity's pull. This flotation process is like a manifestation of natural forces, effortlessly achieving efficient separation of materials. The vortex hydraulic cyclone further stages a magnificent relay: water and centrifugal force collaborate to push the fine metal powders to start the final race of aggregating with their peers. In the high-speed rotating torrent, the fine metal powders are skillfully separated like homing birds; after strict screening by a series of precision sieves, high-purity metal powders are finally extracted - this is the rebirth ceremony of precious metals under the green magic. Every drop of water contains the will of technology to restore dignity to nature. Facing the surging tide of electronic waste, the water selection and recycling equipment not only provides a solution, but also demonstrates a resilient and beautiful exploration of the concept of circular economy - it turns out that technology deeply understands the use of water as a medium to transform waste into useful treasures of the world. In a series of calm and orderly processes of crushing, cyclone separation, and sedimentation, we seem to witness the final rotation and reset of the green magic cube: the dark waste in the discarded circuit boards is reborn in the clarity of water, returning as the essence of precious metals to the veins of the earth, thus adding a new solid link to the sustainable development of the entire planet.