As per US import data provided by Zauba.com, the top products imported from Bulgaria to the US, based on the volume of containers (measured in Twenty-foot Equivalent Units or TEUs), are categorized under the following HS codes: 3105 which represents Mineral or chemical fertilizers; 9404 which stands for Mattress supports, articles of bedding, and similar furnishings; and 1206 which indicates Oil seeds and oleaginous fruits.