Maybe first seeing our products from pictures has nothing special but when you get the real LED sample, you will find the difference that Pure Aluminum dissipates nearly twice more than Die-Casting Aluminum.The lamp cup is made of Magnesium-Aluminum Alloy material, whose heat dissipates 40% faster than other material lamps. This ensures the light's temperature will not be higher than 65°C . Working in this temperature, the lamp will work more time and use less power! With volume quantities available to consumers, it is a wise choice for you.