When procuring an ambulance, you must prioritize the chassis reliability and the medical cabin configuration. Ensure the vehicle uses a reputable chassis (like Ford, Mercedes-Benz, or IVECO) with a high-roof design to allow medical staff to stand. Key technical features include integrated oxygen supply systems, independent AC/ventilation for the medical cabin, and anti-static, easy-to-disinfect flooring. For electrical needs, verify the presence of a pure sine wave inverter (at least 2000W) and multiple 12V/220V power outlets to support life-saving equipment like ventilators and defibrillators.