Supply 25U optical adhesive (0.025mm optical glue), a thickness of 25um (μm), OCA is a transparent optical adhesive acrylic adhesive made without the optical substrate, and then down the bottom, then a layer of release of the fit film base material is a non-fitting double-sided tape. OCA optical plastic products are widely used in resistive touch screen, capacitive touch screen in the PET, ITO, PC and other devices of the transparent film and adhesive.