Compliance is critical for cross-border trade. You must ensure the wood species used are not restricted under CITES (Convention on International Trade in Endangered Species); if using Rosewood, verify it is legally sourced and accompanied by a Phytosanitary Certificate. For electronics, the internal wiring and pickups must meet RoHS (Restriction of Hazardous Substances) standards to ensure they are lead-free. Additionally, for the US market, ensure compliance with the Lacey Act, which requires a declaration for all imported plant products, including the wood used in the guitar body and neck.