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Negocie Coins is a centralized cryptocurrency exchange. Negocie Coins is incorporated by ZATER Capital company in Brazil, where it is based. 
Mercado Bitcoin exchange is registered in Brazil and accepts deposits in Brazilian reals.
Kyber is the decentralized liquidity aggregator that ensures swap of various tokens. Due to the on-chain liquidity protocol, Kyber allows for quick exchange of tokens in any decentralized application.