Peru. -$1,413,098. U.S. Total Import value for NAICS Code 212321 is $34,813,188. Canada, Mexico, and New Zealand accounted for the top imports of Construction Sand And Gravel in 2018. U.S. Total Export value for this industry is $7,705,228. Canada, Mexico, and United Kingdom accounted for the top exports of Construction Sand And Gravel in 2018.