These equipments are important contributors to the protection or enhancement of production quality. When they are used as dancer, they complete system reliablity by controlling product tension and improving production conditions. When they are used as accumulators, they provide significant contribution to increase the efficiency. These products have and important place in the updating and upgrading of customer production lines. Increasing the efficiency of the eisting equipment in the customers’ plant serves as a basic complement to ensure precise control and uninterrupted production.