Supply 5906 optical glue, Korea TAPEX produced, no substrate, the thickness of 50μ (0.05mm), transmittance> 97%, OCA is a transparent optical adhesive acrylic adhesive made without the optical substrate, and then up and down the bottom, and then fit a layer of release of the film base material is a non-fitting double-sided tape. Optical glue with its excellent transparency, high adhesion, heat resistance, moisture resistance, durability and prolonged use of good sealing performance, applicable to all types of touch screen products.