The "5kg or more" category refers to workpieces or final products weighing over 5kg. In processing within this weight range, material handling, fixturing, and ensuring stability during processing are critical challenges. As manual handling is difficult, conveying equipment such as cranes, forklifts, and industrial robots is indispensable. For processing, large and high-rigidity machine tools are required, and heavy cutting, large press forming, forging, casting, and welding are typical processing methods. Main applications include components and structures for construction machinery, ships, aircraft, power generation equipment, large industrial machinery, and large molds, all of which demand high precision and durability.