GLI Pool Products is a world-class manufacturer of swimming pool products, based in Youngstown, Ohio. The swimming pool produ ... cts produced, include vinyl liners, safety covers, and pool accessory items. Utilizing lean manufacturing techniques which have allowed us to see continuous growth since our humble beginnings in 2006. GLI has never had a layoff in company history and works year-round to provide industry-leading, custom shipments to both U.S. and international customers. By focusing our attention on the end consumers – our valued customers – GLI has been able to create an atmosphere that promotes the importance of bringing families together and keeping them safe. read more