Last 3rd of October a day of blood collection in collaboration with the Brotherhood of Blood Donors Zaragoza took place in RINGO VALVULAS facilities. As part of Corporate Social Responsibility, the Management of the company has made easy the course of the day. The Managements expresses gratitude for the participation of their employees, the Brotherhood of Blood Donors Zaragoza and medical assistants. We hope to repeat this experience and make it a routine.