LED BULB LIFE-A65-15W-WW/CW

BRAND: LIFE LED (AMERICAN BRAND)
WATT: 15
CHIP BRAND: SAMSUNG 
SOCKET BASE: E27
LIGHT COLOR: WW (WARM WHITE) 3000 KALVEN | CW (COOL WHITE) 6000 KALVEN
LUMEN: 100/WATT
SIZE: W 6.5cm x H 13.5cm
2 YEARS FULL WARRANTY

What differentiate LIFELED brand from other brands?