Exchangers listing are planned for end of may but most likely in the beginning of june, is expected Uniswap the current exchangers doing Adonx IEO (Inodex, Vindax), and some more from sale stage II, and also adonx.one will be an exchanger.
Many projects start listing from Uniswap because it is very simple to list on Uniswap. But without listing on centralize exchanges the price of ADONX on Uniswap will be small.
Besides the current exchanges listed for IEO dale on Stage I and II, we will have also adonx.one, so it's expected a minimum of 4/5 exchanger, if we conplete sale sucessful for sure will be more exchangers.
Listing on exchanges is the best promotion for project. There are a lot of traders on exchanges and they would know about the project and its tokens. But it is necessary to have listing on big exchanges with good liquidity.
I think that for the start of the project 4 or 5 exchanges are enought. Many projects start listing only from one exchange. But when more exchanges tokens will have more liquidity and more price.