The production deadline starts from the moment you confirm the technical documentation and the offer itself. The product development deadline does not start from the sending of the inquiry. The inquiry is the beginning of our negotiations, and the consent to the offer and drawings is an agreement. Deadlines start from the agreement.
The product is on request, so deadlines are set for each request separately. It depends on the complexity of the product, the current occupancy of the production capacity, and sometimes on the material if it is specific and available at your request. Please, understand the deadlines offered. In any case, you can emphasize in the inquiry itself or later in the negotiations that it is urgent, to write your expected deadlines… But they must be reasonable deadlines for making products on demand.