Nanjing SMD LED Wholesale Supply, Price, Processing Factory [Nanjing Weishibo Electronics Co., Ltd.] 1. Brightness - The brightness of LEDs varies, affecting the price. LEDs for lighting should meet Class I laser standards. 2. Anti-static Ability - LEDs with strong anti-static ability have longer life spans and are thus more expensive. Typically, LEDs with anti-static ratings over 700V are suitable for lighting. 3. Wavelength - LEDs with consistent wavelengths have uniform colors, and uniform color requirements lead to higher prices. 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 life spans and lower prices. 5. Beam Angle - Different LEDs have different beam angles, with special angles commanding higher prices. For example, full diffused angle LEDs are more expensive. 6. Lifespan - The key to different quality LEDs is their lifespan, which is determined by lumen depreciation. Lower depreciation results in longer lifespan and higher prices. 7. Chip - The light source of LEDs is a chip, and prices vary greatly among different types. Japanese and American chips are more expensive, while Taiwanese and domestic chips are generally cheaper.