"Good quality improved soil" by recycling the soil improvement plant and construction surplus soil in southern Chiba . What we aim for is environmental protection. ・ Matsumoto Kenzai is 　produced as "high quality improved soil" suitable for backfilling the generated soil by incorporating many years of research and experience and the latest technology . Matsumoto Building Materials Co., Ltd. matsuken@matsumotokenzai.com All Rights Reserved Copyright (C) Matsumoto Kenzai Co., Ltd. 2006