... silica gel and adhesive. The roller is wear resistant and flexible, and is able to operate stably at 200°C for a ... / open-circuit protective device, it is highly safe(6) Binding width: 320mm, 330mmFunctions:-Able to seal all documents, certificates, photos, ... protect articles from water, doodle, and corrosion; it is widely applied to all related industries such as photography, copy, and familial ...