An RFQ sets out what you need so each supplier quotes for the same thing. For commercial refrigeration, a useful RFQ lists the type and quantity of units, required temperature range, capacity or pan configuration, maximum dimensions, ambient conditions such as a hot kitchen or non-AC shop, power supply available, delivery address and access, installation needs, and any certifications or documents required. It should also ask for warranty terms, AMC options, delivery time and payment terms.
The more precise the RFQ, the easier the comparison. Vague requests such as one big fridge produce quotes for very different products at very different prices. Asking every supplier to fill in the same table, with model, net capacity, ambient rating, power use and warranty, exposes differences that a headline price hides.
A hotel opening in Rishikesh might send an RFQ for four reach-ins, two prep tables and a blast chiller, attaching a kitchen layout, door sizes for delivery and the expected kitchen temperature in summer, and asking for spec sheets with every quote.