Jiangsu LED SMD Light Price, Wholesale, Manufacturer Phone, Sales [Nanjing Versatile Electronics Co., Ltd.] 1. Brightness - The brightness of LEDs varies, affecting price. LEDs for lighting applications should meet Class I laser standards. 2. Electrical Surge Resistance - LEDs with strong electrical surge resistance have longer lifespans and are more expensive. Typically, LEDs with surge resistance over 700V are suitable for LED lighting. 3. Wavelength - LEDs with consistent wavelengths have consistent colors; consistent color requirements increase price. Manufacturers without spectrophotometers for color separation find it difficult to produce pure-color products. 4. Leakage Current - LEDs are unidirectional conductive发光 sources; reverse current is called leakage. LEDs with high leakage current have shorter lifespans and lower prices. 5. Beam Angle - Different LED applications have different beam angles. Special beam angles are more expensive, such as full diffused angle, which is more expensive. 6. Lifespan - The key to different quality is lifespan, determined by lumen depreciation. Lower depreciation and longer lifespan result in higher prices. 7. Chip - The light-emitting body of LEDs is a chip, with different types of chips.