For decades, LWB has been producing luminescent material systems for light generation and colour TV tubes. Major examples of this kind are the materials based on zinc sulphide (ZnS:Cu,Cl, ZnS:Ag,Cl), yttrium oxysulphide (Y2O2S:Eu3+) and yttrium oxide (Y2O3:Eu3+) and their variants. Owing to technological changes, the market for these materials has been decaying over the last couple of years. But LWB still keeps a stock of these materials or produces new ones according to customer requirements. There are still many special applications that LWB's "luminescence classics" are indispensable for. Irrespective of major market trends, our customers can keep trusting us as their reliable partner.