Polonidex mean poloni decentralized exchange. It was established in 2018. This exchange is designed to suit users from diversed languages as it hasbon it's platforms English, Chinese and a few other languages.
Like other decentralized exchanges, there are pros and cons. This should be well understood by all intending users. For instance users must keep his Private keys safely since the exchange will not be responsible for retrieval. Also this exchange does not keep your fund. All users has his funds in his custody.
Polonidex charges zero transaction fee and withdrawal fee. This is one very attractive spot. Also polonidex is a crypto only exchange hence for deposit, it only accept cryptos.