How should export voltage be evaluated when buying an automatic cooking machine?

Start by naming the destination country, then specify its grid voltage, frequency, phase configuration and the control components' rated tolerance in the inquiry itself, rather than signing against a vague "international voltage" claim. During the factory check, compare the nameplate with the wiring diagram and have the wok robot run both unloaded and loaded at that exact voltage, logging wok heating curve, stir-frying motor current and leakage-trip values; repeat the same test on arrival and reject the unit if readings drift beyond tolerance.