In Yini Jewelry company's production workshop, multiple types of precision equipment form an intelligent manufacturing system: The die-casting machine uses kiloton-level pressure to instantly shape liquid metal, forging a structurally precise metal base when the mold closes; the five-axis engraving machine is equipped with micron-level cutters, milling 0.1mm-level three-dimensional patterns and curved contours on the workpiece surface like a craftsman holding a pen; the CNC oil-dropping machine uses a pneumatic servo system to drip color paste with an accuracy of 0.05ml, solidifying into crystal-clear 3D oil-drop decorations on the product surface; the UV printing machine applies multi-color overprinting technology, allowing CMYK inks to present photo-realistic fine graphics on metal, plastic and other materials under UV light curing.