Thank you
Do you know if UUC abd coc tokens are valid or the entire thing is a scam ?
You mean the tokens that are solely listed on their site?
I did some research and there is pretty much nothing found about the exchange is question nor the tokens that you mentioned, apart from the ANN thread that AdolfinWolf mentioned. The UUC and COC tokens that are listed on Bitwinex aren't listed on coinmarketcap at all, which means that most likely, Bitwinex is the only exchange that are listing them.
I wouldn't be surprised if Bitwinex are affiliated with the tokens that you are talking about here. To be completely honest, I think that the volumes that are generated on their site with these trading pairs are fake and just can't be real. I mean, 20k USDT in a trade for a token that no one knows about.
My best guess would be the same as Adolfin's. The site and the tokens are a complete scam most likely, and even if they aren't, there isn't any reason to be using them.