Request for information to a manufacturer on specific / tailor made product, specifying your requirements for the product.
[Give background on your usage requirements - e.g. Our office is small and the [Product] would generally be used by only [n] staff. We run approximately [number] of per months and would prefer a machine with higher capacity. We would like to have [feature], but rarely need to use it more than [x] times per month.]
We intend to use the [product] for [purpose] and we attach the specifications we would require, including [model, size and technical specifications]. Would you be able to supply us with [quantity] by [date]?