Koch Industries, the company controlled by GOP mega-donors Charles and David Koch, sold millions of dollars of petrochemical equipment to Iran in an end-run around a trade ban and cheated the government out of nearly 2 million barrels of oil from federal lands, according to a blockbuster report in the November issue of Bloomberg Markets magazine.

The company has also been involved in improper payments to win business in Africa, India and the Middle East, the Bloomberg report says.

It says internal company documents show the company made petrochemical equipment sales to Iran through foreign subsidiaries, thwarting a U.S. trade ban. The company also repeatedly ran afoul of environmental regulations, resulting in five criminal convictions since 1999 in the U.S. and Canada.