Riken Corporation (Riken) and Nippon Piston Ring Co., Ltd. (NPR) announced that they have established a wholly owning parent company of both companies, NPR-RIKEN Corporation, through a joint share transfer. The new parent company is capitalized at JPY 5 billion. It will conduct management and related operations of it

Riken Corporation (Riken) and Nippon Piston Ring Co., Ltd. (NPR) announced that they have concluded an agreement for integration of management and developed a plan for share transfer in relation to the planned business integration. The two companies will establish a joint shareholding company, NPR-Riken Corporation (

Nippon Piston Ring Co., Ltd. (Nippon Piston Ring) announced that it will participate in a project to develop hydrogen engine truck. The project is initiated by i Labo Co., Ltd. (i Labo) in which Nippon Piston Ring has been participating since 2021. On this occasion, i Labo will operate equipment to evaluate the perfo