Nonlinear laser crystals: Castech keeps leading the global market for BBO and LBO crystals. Rising demand for ultrafast lasers fuels steady growth of crystal orders. Domestic calcium fluoride and zinc selenide infrared crystals are widely applied in automotive infrared temperature measurement.
Infrared single crystals: Domestic production of germanium single crystals and sapphire optical substrates has matured, with such products widely deployed in infrared security, automotive night vision and semiconductor optical windows.