Since March 2018, Rosários 4 has been a Global Organic Textile Standard (GOTS) certified company, a leading global standard for the processing of textiles from organic fibers. This certification integrates all stages of the textile process, from the production of fiber to the finished product, based on environmental and social criteria, thus guaranteeing the organic status of the products.

This certification confirms that the processes and activities developed by Rosários 4, namely spinning, dyeing, finishing and trading, meet the criteria required by Global Organic Textile Standard (GOTS) for certified products, ie, 100% organic yarn. They are For Nature (100% organic cotton), Bio Wool (100% organic wool), Lalalã (100% organic wool), Belmonte (50% organic wool and 50% organic cotton) and Bio Love (100% organic cotton).