1)Power Voltage: 220V 2)Power Frequency: 50-60Hz 3)Power Factor: ≥0.98 4)Coeffcient: ≥0.95 5)THD: ≤15% 6)CF: ≤1.7 8)Specifications: 1 x 18W, 2 x 18W, 3 x 18W, 1 x 30W, 2 x 30W, 3 x 30W, 1 x 36W, 2 x 36W, 3 x 36W, 1 x 58W, 2X58W,etc 9) Metal housing We can manufacture different sizes and specifications of electronic ballasts according to customers' request.We also can provide OEM service