Nakayama Technology Corporation a manufacturer and exporter offers a wide and varied selection of insulated exterior wall panels and bricktiles. From own made bricks to imported natural stones, NTC's products stand by their reputation for quality and performance. Its durable, all-weather, economical, wall siding for residential and commercial Do not sacrifice on quality and insist on only the best from Nakayama Technology Corporation High Performance exterior wall panels "Hareruya" Fine Quality Brick Tile * Polished Natural Granite