Title: Kijun ninshō kenkyū kaihatsu jigyō (burōdobando FTTH jidai ni muketa kōhinʼi hikari densō shisutemu-yō hikari buhin mojūru no anzensei oyobi shinraisei no hyōjunka) seika hōkokusho
Subjects: Fiber optic cables, Safety measures
Places: Japan