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Power: 20W/30W/50W/100WVoltage: DC75-78V/DC105-110V/DC150-155V/DC145-150VCurrent: 250-300mA/100W:600mALumen: 2000lm/3000lm/5000lm/10000lmDisplay value: Ra ≥ 70Series parallel connection: 2B25C/2B35C/2B50C/5B50CCrystal size contained in the lamp bead: 10 * 21milNumber of crystals contained in the lamp bead: 20W:50pcs 30W:70pcs,50W:100pcs ,100W:250pcsMaterial: AluminumAluminum substrate thickness: 1: 46 * 40mmLuminous floor size: 25 * 25mmThermal conductivity: Aluminum plate 2W/M · KApplication places: exterior floodlights, projection lights, tower chandeliers, DIY changed headlights, and so on conditions: LED operation requires a heat sink, and the temperature of the LED beads can't exceed 65 ℃Welding temperature: The temperature of the soldering iron is 350 ℃, and the welding finishing touch time is ≤ 2 seconds.