We believe that long term partnership is a result of high quality, value added service, rich experience and personal contact for 1550nm Externally Modulated Fiber Optic Transmitter, Fiber Optic System , 16 Channel Modulator , Video Channel Modulator ,Adjacent Channel Modulator . Because we stay in this line about 10 years. We got best suppliers support on quality and price. And we had weed out suppliers with poor quality. Now many OEM factories cooperated with us too. The product will supply to all over the world, such as Europe, America, Australia,Yemen , India ,Uruguay , Mozambique .For many years, we have adhered to the principle of customer oriented, quality based, excellence pursuing, mutual benefit sharing. We hope, with great sincerity and good will, to have the honor to help with your further market.