Exchanges like Latoken, Vindax, Coinsbit and P2pb2b are some of the worst exchanges in the industry and have a huge tendency to dump token prices when listed there. This exchanges are associated with wash and bots trading and makes it highly impossible and unpalatable for traders to explore trades on them and thus leaving bad experiences ultimately leading to loss of interest and in turn price dumps.Binance, Houbi, OkEx, Kucoin etc are very good in the market. Most of the projects listed there increase the level of much more investment.
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It's not about the exchange it's the tokens it self . They don't have enough  demand thats why it's dumped , what ever exchange they are listed if they have the demand they need and community supporters it will increase the price.
the exchange does not have the ability to dump the token unless the token is what they asked payment for listings .