Giken. 

Giken Holdings Co., Ltd. primarily engages in civil engineering business. It is involved in the installation and material sale activities for anchored grid-type retaining wall construction; on-site and simple blow-on concrete slope coverings; Mather soil and high-energy absorbing shelf construction; beads ringer net construction; tree planting; and other slope, landslide prevention, and borehole construction. The company also manufactures, sells, and installs seawall wave-damping foundation and environmental blocks, as well as erosion control and free-standing molded blocks for preservation; and provides reefs, and civil engineering and building materials. Giken Holdings Co., Ltd. was founded in 1958 and is headquartered in Tokyo, Japan.