For high-value robotics, Sea Freight (FCL - Full Container Load) is the most cost-effective for bulk, but ensure the use of moisture-absorbent materials and VCI (Volatile Corrosion Inhibitor) bags to prevent rust during long voyages. For urgent prototypes, Air Freight is viable but requires specialized lithium battery declarations if the controller has integrated power backups. Always clarify Incoterms; CIF (Cost, Insurance, and Freight) is recommended for buyers who want the supplier to handle the complexities of transit insurance.