What is the fine-grained topic of the following text: The sponsorship cooperation agreement between the duo states that in the four-year period covering January 1st, 2017 to December 31st, 2020, Absen will supply LED colour display hardware equipment, software and supporting services to the football league and in return will enjoy sponsorship and tournament stadium rights. Only return the topic.
Sponsorship cooperation agreement between Absen and a football league