Which innovative building material product, launched in the 1990s, allowed architects to create previously impossible curved glass facades on skyscrapers?

Test your knowledge of groundbreaking product innovations in architecture! The architectural world has been transformed by key product launches that revolutionized design possibilities and construction methods. This trivia question focuses on a pivotal moment when a new building material dramatically changed what architects could achieve. Can you identify which famous product launch opened new horizons for architects worldwide?

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Cold-bent glass technology by Pilkington
Suspended particle device (SPD) smart glass by Research Frontiers
Self-cleaning glass by Saint-Gobain
Aerogel insulating glass by Cabot Corporation