How should export gas specification be evaluated when buying a rotating clay-pot cooker?

Overseas gas spec matters more than looks. First pin down the destination's gas family (natural gas or LPG), supply pressure, nozzle orifice size, and regulator model, then have the maker fire the burner on that exact gas and report flame quality plus heat output. Swapping only the connector while leaving the nozzle and air shutter untouched gives a yellow flame, carbon build-up, and rice that burns at the rim yet stays raw in the middle. A factory burn test on local gas, logged with flame height and load, makes arrival checks quick and disputes rare.