[This Day] The ban of crude palm oil and its derivatives exports by Indonesia, the world's largest supplier of the commodity, should be music to the ears of investors in that line of business in Nigeria who eye the export market. Before the ban, palm oil and the refined products from it, were a major source of foreign earnings for that Asian country. In April 2020, a ton of Indonesian crude palm oil was fetching around $545 on the European and other markets. Two years later, that jumped to $1,700.