Though usually
overlooked, science and engineering principles play a key role in the control
and regulation of international trade. The proper measurement of products,
identification of specific components of products and identification of
physical and chemical characteristics of products are needed to properly
account for the movement of products across international borders. Of primary
importance is how each product in international commerce can be properly
classified within the Harmonized Tariff Schedule and how measurement, chemical
and physical specifications and engineering characteristics play a key role in
almost all classification decisions. Each section of the Harmonized Tariff
Schedule has the need to not only measure but also identify physical and
chemical characteristics for proper placement in the schedule.