30 billion yuan. 2023 Jiangsu hairy crab farming scale reached nearly 4 million mu, more than 200,000 farmers, farming production up to 250,000 tons, accounting for more than 90% of the national total output, annual output value of more than 30 billion yuan. Hairy crabs are decapods bowed crabs family mitten crab arthropods, also known as sea hairy crabs, hairy crabs, river crabs.