A specialized 2019 edition book that provides a detailed explanation of the regulations concerning grid interconnection. I purchased this when I was working on grid interconnection-related tasks, but I no longer need it, so I am selling it. There are no markings. - Title: Grid Interconnection Code JEAC 9701 - 2019 - Year of Publication: 2019 - Publisher: Japan Electrical Association, Grid Interconnection Specialist Committee Thank you for looking.