Quality Light Source LLC (QLS) has the goal of supplying the world with high-quality, cost-saving LED lamps. We manufacture a ... nd sell the latest, most-innovative lighting products available. From Snap Set downlights to our exquisite Sapphire filament lamps, QLS lighting products decrease maintenance and improve light quality. With over 100 years of cumulative experience, a group of well-known industry experts “took the plunge” and formed QLS in 2017. They are dedicated to providing the very best the changing solid state lighting industry has to offer. Relying on our engineering ability and supplier networks, our team can develop new or improved versions of any LED. In addition to lighting knowledge, our team is ready to help you find a lighting solution. QLS is supported by our sister company in China. Our newly built facilities use targeted automation, lean methodology, and a defect free culture. As a vertically integrated company, we can tightly control costs and ensure product quality. This allows for rapidly expanding capacity, to make industry leading LED filament bulbs, standard LED bulbs, lighting luminaires, and LED T8s. Or, even a brand new product you bring to us. read more