Huobi Pool is a Huobi Group sub-brand that is a mining pool that can mine a variety of currencies, including BTC, ETH, DCR, ETC, and others. With the account and security system of the Huobi Group. It has its own token, the HPT, which is not a mineral and is issued to Huobi Pool users as well as Huobi token holders. Its market value was high, but not enough to indicate significant growth to the point where, while being traded on multiple exchanges, including Huobi, its worth is still relatively tiny compared to the big, creating hurdles for investors.
The most important feature of this pool in my opinion is that it is supported by a reputable exchange.