What is the fine-grained topic of the following text: Strategic Collaboration between Japan Holiday Travel Co., Ltd. and Keisei Electric Railway Co., Ltd.
Japan Holiday Travel Co., Ltd. (Head office: Osaka City, Osaka Prefecture; President: Yu Kang Wu), in collaboration with Keisei Electric Railway Co., Ltd. (Head office: Ichikawa City, Chiba Prefecture; President: Toshiya Kobayashi), will start a service from November 9th, 2018 enabling international visitors in Japan to collect special discount train tickets for the Keisei Skyliner called “the Skyliner Coupon and the Keisei Skyliner & Tokyo Subway Ticket” just by showing a QR code previously sent to their smart mobile phones. Only return the topic.
The launch of a mobile-based discount train ticket service by Japan Holiday Travel Co., Ltd. in collaboration with Keisei Electric Railway Co., Ltd.