Nanjing LED SMD Light Customization, Manufacturer Hotline, Sales Quotation [Nanjing Versatile Electronics Co., Ltd.] 1. Brightness - LED brightness varies, affecting price. LEDs for lighting should meet Class 1 laser standards. 2. Electrical Resistance - LEDs with high electrical resistance have longer lifespans and are more expensive. Typically, LEDs with resistance over 700V are suitable for LED lighting. 3. Wavelength - LEDs with consistent wavelengths have uniform colors, and uniform color requirements increase price. Manufacturers without spectrophotometers find it difficult to produce pure-color products. 4. Leakage Current - LEDs are unidirectional conductive light sources. Reverse current is called leakage, and 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. For example, full diffused angle is more expensive. 6. Lifespan - The key to different quality is lifespan, determined by lumen depreciation. Lower lumen depreciation results in longer lifespan and higher prices. 7. Chip - The light source of LEDs is a chip, and different chips have significant price differences. Japanese and American chips are more expensive, while Taiwanese and domestic chips are generally cheaper.