Normal value cannot be based on the price in the exporter's domestic market when there are no domestic sales. For example, if the products are only sold on the foreign market, the normal value will have to be determined on another basis. Additionally, some products may be sold on both markets but the quantity sold on the domestic market may be small compared to quantity sold on foreign market. This situation happens often in countries with small domestic markets like Hong Kong and Singapore, though similar circumstances may also happen in larger markets. This is because of differences in factors like consumer taste and maintenance.