After extensive experience with Binance and OKEx's dual-currency investment services, I've discovered that the annualized yields for the same price over the same period often differ between the two platforms. Sometimes Binance's yield is higher, sometimes OKEx's. For example, Binance's yield for this Bitcoin dual-currency investment, which settled on 9:50 PM, was higher. However, Binance no longer offers dual-currency investments, while OKEx still has a high-interest dual-currency investment with a settlement date of 9:40 PM. Binance offers a limited number of subscriptions per transaction, allowing multiple subscriptions. OKEx displays the remaining subscription capacity.