High Frequency Transformer, Low Frequency Transformer, LED Driver manufacturer / supplier in China, offering UL IP67 Waterproof LED Switching Power Supply Constant Voltage Compact Size 40W 12V24V LED Driver, Power Transformer Etd34 Etd36 Etd44 Etd54 Horizontal Double Slot Bakelite Frame Bobbin, Pq5050 PC40/PC44/N87 Step Down 24V12volt 1A Power Type Energy High Frequency Transformer and so on.