We have 179 product brands. Producta principalia sunt Filtra optica: Filtra selectiva (BG; GG); Filtra infrared (RG); ultraviolaeum vitrum (UV); calor-insulating vitrum (KG); Filtra abscissos; neutrum griseum vitrum (NG); vicus vitri; specula polarians, vitrum opticum hyalinum (B270) et alia specula specialia.
