The forests of the earth are not only the source of a wealth of products such as timber, pulp, and charcoal, but are also of great importance in the absorption of carbon dioxide. Therefore, it takes little consideration to understand the dangers of overexploitation caused by economic development and population growth. With an eye on forest conservation and increasing carbon dioxide fixation, exploration of the extension of product life and the expansion of product recycling plays an important role in the sustainable utilization of forest products. To that end, technology must be developed...