... High brightness 2. LumenMax SMD3021 LED chip 3. Good light transmittance 4. CE,ROHS certificate t5 led tube lightsSpecificationProduct Name4W T5 ... light transmittance3. LumenMax SMD3021 LED chip, high brightness and low attenuation4. High cost-effective, good heat-dissipation, stable ... LED tube lights is widely used in family, school, office, showing room, meeting room, commercial building, tower, hotel ...