In 1971 we started as a rock crystal mining company and became an enterprise with restricted responsibility (Goiana Importadora e Exportadora Ltda.). After this year it began to acquire large quaring areas in order be prepared attend the external quartz demand. This objective was attained early 1980'ies, when 90% of ...
High purity Quartz sand,quartz sand for feller,eyeclean quartz,rough quartz - lascas,rough quartz for bijouterie,