The construction category refers to the manufacturing and processing of components and parts that make up all types of structures, such as residential buildings, commercial facilities, and public facilities. A wide variety of materials (such as metal, wood, concrete, glass, and resin) are used, and advanced processing techniques are required according to their respective properties. Typical processing methods include cutting, welding, and bending of steel frames and sashes, cutting and joining of wood, forming of precast concrete members, and processing of window glass and interior/exterior finishing materials. These processed products are incorporated into buildings as structural elements, interior/exterior finishes, and equipment, and are required to have high safety, durability, aesthetic appeal, and environmental performance. Quality control and precision assurance in the manufacturing process are extremely important in this field.