If the tender says “supply elevators” and little else, you will get creative pricing and painful clarifications. A usable elevator tender specification is specific enough that two serious OEMs return comparable offers.

Include building type and traffic assumptions, load/speed/doors/units, codes and fire/seismic options, a hard inclusions/exclusions list, drawing language, spare parts for several years, training, warranty, and how you will score bids beyond lowest CapEx. Require a GA sketch with the bid.
We answer international RFQs constantly. The clear ones move fast. The vague ones burn weeks. RITECH would rather lose on price after a fair comparison than win a muddy scope that explodes on site.

If you want a clean proposal, send a structured RFQ. We will mark scope boundaries plainly — that is how good procurement is supposed to work.