- Welcome to Santo Tomas de Castilla's Zone of Free Trade and Industry Guatemala, Central America Version en Espa ol The Zone Trade and Industry (ZOLIC, by its initials in Spanish) is the first free zone in Guatemala, created by the government to promote the industrial and commercial development of the country. ZOLIC is a functionally autonomous organization with own patrimony, unlimited duration ...www.guate.net/zolic/zolicdi.html