Compliance is vital to avoid customs seizures. For the US market, ensure materials comply with CPSIA (for lead and phthalate content). For the EU, products must meet REACH regulations regarding chemical substances. If the box includes electronic components like LED lights or power banks, it must carry CE, RoHS, or FCC certifications. Additionally, if you are sourcing wooden or paper boxes, FSC (Forest Stewardship Council) certification is often required by large retailers to prove sustainable sourcing.