CD Bioparticles provides CsPbX3 perovskite nanocrystals with emission range from 400 nm to 640 nm. The key properties of CsPbX3 perovskite nanocrystals are the high luminescence quantum yields of up to 90%, narrow emission line widths providing pure colors and the coverage of a wide color spectrum. Especially in blue and green regions, these nanocrystals clearly outperform their Cd-chalcogenide-based cousins. Lead halide perovskite nanocrystals (NCs) have emerged in recent years as an important class of optoelectronic materials with applications in light emitting diodes, solar cells, photodetectors and lasers.