1.High luminous efficiency 2.Safety,easy,eyes protection 3.Life time:>6000h ... .Best quality in manufacturing best energy saving lamp2.High luminous efficiency 3. No center dark,No noise4. energy ... saving, high power factor, long life span5.safety and easy to use , eyes protection6. Low light decline ... Stores, Clubs, Restaurants, Hotels, Supermarkets HD-HT2001 High luminous efficiency cfl light