How do the numbers of exporters of Mattress supports and similar furnishing products to the US from Bulgaria compare with the number of US importers for the same?

Based on the import data from, there is a significant difference between the number of exporters from Bulgaria and US importers for mattress supports and similar furnishings products, categorized under HS code 9404. There are 50 unique exporters from Bulgaria whereas there are 93 unique US importers, showing more diversity on the side of US importers.