What influence does the single commodity structure have on the development of export trade?

If a country's export commodity structure is too single, it means that its export market is highly dependent on one or several commodities. Once the price of these commodities fluctuates or the demand drops, the country's export trade will be seriously affected. In addition, a single commodity structure may also reduce the country's export competitiveness, because other countries may produce the same goods and sell them at lower prices, thus crowding out the country's market share.