HashKey MENA launches order book transactions HashKey MENA, the exchange business line under HashKey Group, announced today the launch of its Order Book trading service. This upgrade will enable trading starting from 1 USDT without a trading volume limit, provide flexible trading volume options, and support 24/7 deposit and withdrawal services, bringing users a more efficient, transparent, and fair trading experience. In addition to the Order Book trading function, the platform has also launched OTC (over-the-counter) trading services, providing services for institutions and high net worth clients, supporting large-scale over-the-counter trading of mainstream assets such as BTC, ETH, USDT with AED and USD.