Recently, LG Electronics and Samsung start to adopt LED lights in refrigerator. LG has launched a new DIOS refrigerator which combines with green, white and blue LED lights that it claims to be eight times more energy-efficient than the fridges that use regular lights. The company also touts the LED lights as causing little temperature differences in the refrigerator to reduce fresh vegetable oxidation. In addition, LG Household and Health Care, a sister company of LG Electronics, also combined a lamp and air freshener with LED lights. People simply pr...