Traders are better off NOT using documents like LOI, ICPO, FCO, etc. Even if and when they rarely are used in internal trades, on a restricted level within specific industries, they have no legal or customary basis in International Trade whatsoever. In fact the presence of many of these terms are considered to be signs of Advance Fee Fraud, by knowledgeable players and law enforcement.
The Letter of Intent is a non_binding document of inquiry, stating one's interest and intent. The more appropriate document for an Importer to use when initiating contact with an Exporter or supplier is an RFQ _ Request for Quotation. Many brokers and new traders believe that the LOI establishes some sort of firm inquiry, nothing can be further from the truth. There is absolutely nothing binding whatsoever about an Letter of Intent because all that it does is to establishes an intention _ for example, I can sit down and write a letter of intent to buy the empire state building and it would be, utterly non binding.