- US Glass Magazine: GPD Turns 25
- Glass Online: Jeffoptics at Glass Performance Days Conference 2017 in Tampere, Finland
- Glass on Web: Meeting of glass experts in Finland in the era of digitalization
- Glass Online: GPD 2017 Step Change announced the winners of the pitching competition
- Glass on Web: GPD 2017 – Great Event for Sparklike
- Glass on Web: GANA Honors Industry Leader
- Jorma Vitkala Executive Address
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