Since sending a technician across borders is rarely feasible, negotiate for a 1% to 2% free spare parts kit to be included with the bulk order. This kit should include thermostats, door hinges, gaskets, and fan motors. Demand a minimum 1-year warranty on the compressor and ensure the supplier provides English-language wiring diagrams and troubleshooting manuals. Confirming the availability of local repair services that can handle the specific refrigerant (e.g., R290) is also a crucial step before finalizing the contract.