Symbiosis describes close interactions between two or more different species. There are four main types of symbiotic relationships: mutualism, commensalism, parasitism and competition. Symbiotic relationships are important because they are a major driving force of evolution.
Border Security. Exporters. Definition. For C-TPAT purposes, an exporter is defined as: A person or company who, as the principal party in interest in the export transaction, has the power and responsibility for determining and controlling the sending of the items out of the United States.
A: China's main exports are electronic equipment and machinery, which amount to more than 40 percent of the country's total exports. China is the largest exporter in the world. China's highest value export products in descending order are mobile computing devices, such as tablets and laptop computers, cellphones and smartphones, computer processors and controllers, and liquid crystal display panels.