With excellent luminous effect, OS-22 saves 80% energy while giving equal quantity of ... Low lumen attenuation, flicker-free and eye-protecting, OS-22 gives quiet and soft luminousatmosphere.Low content of mercury and ... lead-free, OS-22 adopts tri-phosphor powder for the tube and PBTmaterial(fire ... , stores and supermarkets, etc Energy saving lamp (OS-22)