Laboratorio de Simulación Molecular y Química Computacional, CIQSO-Centro de Investigación en Química Sostenible and Departamento de Ciencias Integradas, Universidad de Huelva, 21006 Huelva, Spain ...

But what does it really mean when something is a "Product of China"? How much of it actually comes from China? And how do customs officials draw the line? Here in the U.S., the rules are ...