Premium 325mesh Self-Heating Iron Powder Heat Patch
High-purity iron powder (325 mesh) ensures optimal oxidation for consistent, long-lasting heat generation. Precision-engineered airflow control maximizes heat efficiency while maintaining safe, low-temperature warmth. Ultra-thin non-woven fabric allows discreet wear under clothing, ideal for muscle relief, outdoor sports, or cold-weather work. Oxidation-activated design requires no electricity or external heat source. Industrial-grade adhesive stays firmly in place for 8+ hours without residue. Individually vacuum-sealed packs prevent premature activation. Bulk packaging available for cost-effective therapeutic or commercial use. FDA-compliant materials, manufactured in ISO-certified facilities. Essential for physiotherapy clinics, winter sports retailers, and occupational safety suppliers.