Royal GER30 EA v1.0 MT4 for MetaTrader 4 (MT4) appears to be a custom Expert Advisor (EA) designed specifically for trading the GER30, which is the symbol for the German Stock Index (DAX 30) on the MetaTrader platform. The GER30 or DAX 30 is an index that tracks the 30 largest publicly listed companies in Germany, and it is widely traded in the financial markets.