Irregular springs are custom-made springs that do not conform to standard shapes like coil springs or leaf springs, but are designed to suit specific functions and installation spaces. By intricately bending, twisting, and cutting wire material using multi-axis forming machines or CNC spring forming machines, various three-dimensional shapes are achieved. Materials used include piano wire, stainless steel wire, oil tempered wire, etc., and heat treatment and surface treatment are applied as needed. They are functional components with a high degree of design freedom, serving roles such as specific motion, holding, and cushioning in fields like automotive parts, home appliances, medical equipment, and precision instruments, where space-saving and multi-functionalization are required.