Kiyoshi Ishii

Haneda Zenith Holdings Co., Ltd. engages in the manufacture and sale of concrete products. It operates through the following segments: Concrete Products, Ceramics, Construction, and Others. The Concrete Products segment provides manholes, hume pipes, box culverts, and disaster-prevention products such as rock fall protection fences. The Ceramics segment offers electronic components and new ceramic products such as semiconductor devices and sliding parts. The Construction segment manages the installation works of concrete and disaster-prevention products. The Others segment includes equipment rental, material sales, radio frequency identification, and real estate leasing services. It is also involved in the public works and manufactures new ceramic products. The company was founded on April 1, 2011 and is headquartered in Tokyo, Japan.

Nippon Zenith Pipe Co., Ltd.'s principal activity is to manufacture huge pipes. The operations also involve manufacturing of secondary concrete products, square-shaped sewer and drain pipes. The other activities involve management of real estate, rental of steel products, industrial and construction machines. The operations are carried out through the following divisions: Concrete products and Engineering. The Concrete products division includes centrifugal concrete, vibration compaction and purchased products. The company was founded in April 1935 and is headquartered in Tokyo, Japan.