Spectacle Lenses of Materials Other Than Glass, Unmounted

Yes. Any unmounted spectacle lens made of a non-glass material — including standard CR-39 resin, polycarbonate, Trivex, and high-index plastic substrates — is classified under 900150 regardless of refractive index or coating. The glass-versus-non-glass distinction at the HS6 level is what separates this heading from 900140.

Mexico's prominence reflects integrated optical manufacturing operations established under USMCA-era supply chains, allowing finished and semi-finished plastic lens blanks to move efficiently across the US-Mexico border. Proximity reduces lead times and cold-chain or fragility risks associated with precision optical goods, making Mexico a preferred sourcing hub compared to more distant Asian suppliers for this product category.