As an agricultural food product, lotus seeds must meet strict Phytosanitary and Food Safety regulations. Buyers should require Pesticide Residue Test Reports and Heavy Metal Analysis (Lead, Cadmium, Mercury) to ensure they meet the destination country's standards (e.g., FDA for the US or EFSA for the EU). It is essential to verify that the supplier provides a Phytosanitary Certificate and a Certificate of Origin. Additionally, ensure the product is Sulfur-Free, as many regions have strict limits on sulfur dioxide residues in dried foods.