CTI provides component scanning services related to Party A's full-process quality control. The component scanning includes the inspection and inspection of the thickness of the steel bar protection layer and the steel bar spacing. The detection range is mainly the components and parts where the position of the steel bar may significantly affect the bearing capacity and durability of structural components, such as the longitudinally stressed steel bars of beams and slab components. Component scanning reflects the physical performance of the structure from the perspective of the steel reinforcement in the concrete structure.