The bidders return a proposal by a set date and time, and this deadline is very strict; late proposals are rarely considered, depending on the terms of the initial RFP.
The bidders return a proposal by a set date. This is depending on the terms of the initial RFP. The bidders return a proposal by time. This is depending on the terms of the initial RFP. This deadline is very strict. This is depending on the terms of the initial RFP. Late proposals are rarely considered. This was depending on the terms of the initial RFP.