What do dry-goods carriers, TBS, Diana Shipping, and DryShip (DRYS) have in common?

BS International, an ocean transportation services company, had this to say in its S-1's risk factor section about its reliance on China (S-1 filing dated March 7, 2005):

Our business depends to a significant degree on the stability and continued growth of the Chinese economy.

....the strength of the shipping industry in the past several years is attributable, to a significant degree, to the rapid growth of the Chinese economy. Economic growth in China has caused unprecedented demand for raw materials from Latin America, including iron ore, bauxite, soybeans, timber, zinc and manganese from Brazil, tin from Bolivia and copper from Chile. These raw materials generally are transported by ocean freight. The growth of the Chinese economy has stimulated growth in other Asian economies as well. The increased demands for trans-Pacific ocean freight have resulted in increased ocean freight shipping rates, charter rates and vessel values across the globe. Any pronounced slowdown or decline in the Chinese economy could be expected to have significant adverse effects on the economies of Latin American and Asian countries, on the demand for our services and on the value of our vessels. We expect that a significant decline in the Chinese economy would have a material adverse effect on our results of operations.

Diana Shipping, owner and operator of dry bulk carriers that transport iron ore, coal, grain and other dry cargoes along worldwide shipping routes, had
this to say in its F-1's risk factor section about its reliance on China