Ryujiro Kiyama

KOKEN BORING MACHINE CO., LTD. is a company mainly engaged in the manufacture and sale of boring machinery and related machinery. The Company operates in two business segments. The Boring Machinery-related segment is engaged in the manufacture and sale of boring machinery, pumps, and other types of machinery and components, the manufacture and sale of well-related equipment, as well as the rental of boring machinery. The Construction-related segment is engaged in the construction works for geologic surveying, civil engineering, grouting, foundation building, well-digging, hot springs, soil contamination research and modification, and anchors, among others, as well as the provision of construction consulting services.