Core Advantages

•Strong adhesion without delamination, suitable for complex underwater conditions: Optimized adhesion formula tailored for fin underwater usage characteristics, forming stable chemical bonding with PP substrate. Room temperature peel strength 4~9N/cm, resistant to seawater immersion, impact, and vibration. Long-term use in seawater or freshwater environments without adhesive failure or edge lifting, completely solving industry pain points of fin overmolding delamination and detachment. Simultaneously matches thermal expansion coefficients of TPE and PP, with minimal bonding strength degradation across a wide temperature range of -50°C to 100°C, suitable for various water temperature scenarios.

•Seawater resistant and corrosion resistant, outstanding durability: Added specialized anti-hydrolysis and anti-seawater corrosion additives, capable of long-term resistance to seawater and pool water (chlorine-containing) erosion, without swelling, aging, or cracking. Also possesses excellent weather resistance and UV resistance, maintaining good elasticity and appearance after prolonged exposure to sun and rain, extending fin lifespan, suitable for outdoor water sports scenarios.

•High elasticity saves effort, excellent propulsion: Shore hardness 50~60A customizable, soft texture yet highly tough, with outstanding rebound and deformation recovery capabilities. Fins quickly rebound during kicking, generating strong propulsion while reducing leg exertion burden, enhancing comfort and efficiency during diving and swimming. Suitable for various kicking methods like frog kick and flutter kick, meeting needs of both beginners and professional divers.

•Environmentally friendly and safe, suitable for all user groups: Halogen-free, non-toxic, odorless, no harmful leaching, free from heavy metals, phthalates, polycyclic aromatic hydrocarbons (PAHs) and other harmful components. Passed global authoritative environmental certifications like RoHS, REACH, EN71-3, ASTM F963. Non-irritating to skin contact, suitable for adults and children of all ages, compliant with water sports equipment environmental standards, 100% recyclable, aligning with green sustainable development principles.

•Easy processing, suitable for diverse designs: Excellent melt flowability, low specific gravity (0.89~0.96g/cm³). Can complete overmolding via secondary injection molding or overmolding injection, no complex pretreatment required. Smooth molding without material accumulation or flash, product surface flat and smooth, no burrs. Suitable for diverse fin structures like footbed, bootie, straps, and various designs from cartoon to professional. Shrinkage rate controlled at 1.2~1.4%, precise dimensions, no subsequent polishing needed, significantly improving production efficiency. Sprue material recyclable, reducing production costs.

•Lightweight adaptation, comfortable wear: Combined with lightweight advantages of PP substrate (PP specific gravity 0.9~0.91g/cm³), finished fins have moderate overall weight, good underwater buoyancy adaptation, avoiding leg fatigue from excessive weight. Meanwhile, TPE overmolding layer feels soft and skin-friendly, conforms to foot contour, comfortable to wear, no chafing or discomfort, enhancing long-term wearing experience.