When sourcing lighters, the most critical factor is compliance with ISO 9994:2018, which specifies safety requirements for flame height, resistance to dropping, and elevated temperature. For the North American market, products must meet ASTM F400 standards. Ensure the lighters feature a child-resistant mechanism (EN 13869 in Europe) that prevents 85% of children under 52 months from operating the device. Additionally, verify the fuel reservoir material; high-quality lighters use Delrin® (polyacetal resin), which is highly resistant to internal pressure and impact.