>>9206921 (lb)
I would not discount the theory, may even have been coordinated arrivals East and West Coasts. Here, Containership COSCO SHIPPING SAKURA arrived in New York City after sailing from Busan New Port, South Korea. I don't have a previous track on if she was in China before Korea. Refrigerated shipping containers come in standard 20 foot, 10 foot, and forty foot lengths.