Since its founding in 1970 with seven employees, Glassline Corporation has grown into a Perrysburg, Ohio machinery manufacturer known for serving the flat-glass industry. Its approximately 100,000-square-foot operation builds custom equipment for industrial customers and carries ISO 9001:2015 certification achieved in 2025.
ISO 9001:2015
Frazier Machine & ProductionFounded in 1971, Frazier Machine & Production is a Perrysburg precision-machining company known for the flexibility to handle both one-off prototypes and recurring production work. Glassmaking is its largest market, while its experienced machinists serve customers across several industrial fields. ISO 9001:2015 certification reflects the company’s emphasis on consistent quality.PERRYSBURG, OH
Glenny GlassSince William Glenny founded the company in Cincinnati in 1851, Glenny Glass has built its identity around nearly two centuries of dependable service. Today, the family-owned company employs more than 110 people at its Milford, Ohio, facility and serves trade customers across five states. It is recognized as the oldest continuously operating flat glass fabricator in the United States, with IGCC and SGCC certifications supporting its work.MILFORD, OH
Billco ManufacturingSince 1948, Billco Manufacturing has designed and built flat-glass fabrication equipment in Zelienople, Pennsylvania, where every machine is manufactured on-site for glass producers. Founded by Ethel Billinger, the company remains in its third generation and is known for advancing the field—from early automated cutters to its American-made Ultra Series and 24/7/365 service support.ZELIENOPLE, PA
Bottero S.p.AFounded in 1957 by a glassworks mechanic, Italy’s Bottero S.p.A. designs and manufactures machinery for processing both flat and hollow glass, an unusually broad reach that also includes complete laminated and float-glass production lines. Headquartered in Cuneo, the group now has more than 600 employees, including 212 engineers, and supports installations in 100 nations through international factories, branches and service teams. Its history runs from early flat-glass inventions to hollow-glass container machinery introduced in 1966, with process simulation, engineering support and ongoing R&D at the center of its work.POMONA, NY