A trade team from Taiwan visited Iowa last week and signed letters of intent to purchase $2.8 billion worth of U.S. grains over the next two years. The deal includes corn, soybeans, wheat, and the ethanol co-product distillers dried grain with solubles (DDGS). Iowa Corn Promotion Board (ICPB) Director Mark Heckman signed the letter of intent between ICPB and the …