What is the deformation loss of anchor bolts, according to anchor bolt manufacturers?

The deformation loss of anchor devices is as follows: for post-tensioned components, when tensioning is completed and anchoring is performed, the anchor device is subjected to immense pressure, causing it to deform and compact the anchor plate beneath it. Additionally, some prestressed reinforcement bars in the anchor devices may also retract inward. Moreover, the joints of assembled components continue to compact and deform after anchoring. These deformations result in the relaxation of the prestressed reinforcement bars after anchoring, leading to the loss of prestress.