Dermal Substrate comprises a biocompatible film assembly for topical application to limb surfaces. The substrate exhibits a thickness range of 0.2-0.5mm and elasticity modulus 1.0-2.0 MPa, facilitating manual adhesion under ambient conditions (15-35C). Technical Specifications: - Unit Quantity: 3 film units per sealed pack - Packaging Dimensions: 125x20x175mm (LxWxH) Physical Properties: - Gross Weight: 20g per pack - Surface Area: 20 cm² per unit Material Composition: - Base: Hydrogel polymer matrix - Adhesive layer: Acrylate copolymer - Backing film: Polyethylene terephthalate Application Protocol: 1. Apply to cleansed, dry limb surfaces 2. Maintain contact for 30-60 minutes 3. Discard after single use Safety Notice: - Avoid application on broken skin or wounds - Discontinue if irritation occurs - Store below 30C in dry environment Package includes: 3-unit dermal substrate assembly in resealable package Color: As shown