Environmental protection has a major issues all over the world. There are several ways to keep healthy environment, and sustainable use of resources. Recycling fibers technology is one of key issues for environment protection, sustainable management, forest protection and specialy for sustainable paper industry. The readers could find out some interesting issues on recycling fibers and effect of recycling on fiber properties on this book. This book concerning to recycling TMP''s fibers and the effect of recycling on strength properties of recycled paper. The author would thanks for your interest in environment protection and recycling industry.