Pull is any replacement part that was pulled off an OEM device that remaining its original quality condition. We will make sure that all parts have been passed our QC test. This category is further broken down by grades. Depending on the life cycle of the OEM device and the use given by its original owner, the pull screen replacement part includes A and B grades. A grade means roughly 90%-95% new and has little scratches on the surface of a product. B grade means roughly 70%-80% new and it has big scratches on the surface of a product.