Questions that are easier to settle early
Should I request plastic or steel trays?
List what the tray carries and how it is washed and stored. Plastic grade, wall construction and temperature limits matter; steel thickness, coating and edge details matter. Compare the manufacturer's stated limits and replacement-tray terms for the same use rather than treating a material name as a durability claim.
How can I check a replacement wheel?
Ask for a dimensioned drawing including axle bore, hub length, wheel diameter, tire width and retention method. Confirm bearing and spacer details with the supplier. A sample fit check on the intended model is a useful procurement step before a larger spare-parts order.
What if my budget is undecided?
Choose compare options and explain which items cannot change, such as passage width or required payload. Ask the factory to separate optional finish, packing and spares from the base specification. This makes cost changes traceable without assuming the lowest quoted unit price is the suitable configuration.