DOOR organizes training courses conducted by long-term professionals. Therefore, our cooperation was based on acquiring B2B leads interested in the development and improvement of skills. We focused on the sectors of industrial processing and electricity, gas, steam, hot water and air conditioning production and supply. We supplemented the target with other criteria, for example turnover, position and area of operation. The results of generating leads were satisfactory, and the acquired business contacts made it possible to increase sales in the DOOR company. It was the third, but not the last, campaign carried out for the DOOR.