Our research shows that Japan is a significant exporter of water tank trucks, accounting for around 5% of global exports. Japan's success in the water tank truck business is mostly due to its high quality and dependability. The US imports the third-most water tanks in the world from Japan.The top three importers of Water tanks are Vietnam, with 178,554 shipments, India, with 48,858 shipments, and the United States, with 32,041 shipments.Isuzu is Japan's biggest producer of water tank trucks, with a value of USD 500 million. Hino, Mitsubishi Fuso, Nissan Diesel, and Toyota are the next four biggest exporters.
You can find a brief of the study here: https://n-geneki.com/industry-analysis/145/global-portable-water-trucks-market-size