Unfair trade:

The principle of free trade and pre-eminence of competition  implies  that there should be fair competition among the firms. The underlying principle is that the products should be able  to compete in the international market on  their own without any prop of direct subsidy  from the government. And the prices should not be kept artificially low to kill competition; for example, a firm should not "dump"  its goods,  i.e., should  not generally export products at prices below the cost of production. These two  situations, i.e.,  subsidy by government  and "dumping"  by firms are considered to be examples of unfair trade. The WTO contains detailed rules m them.