Atop Technology Co., Ltd is a high tech manufacturing and exporting enterprise on Fiber optical and telecommunicating device. Found in 2000,we now have over 7 years experiences to managing our business, our product has passed ISO:9001, CE, FCC and ROHS certificate. We exporting continously our device to eastern europ. UK, Asia, South Africa, mid-east and world widly. We have good feed back. So that we have strong confidence on the quality on our device that we are taking 3 YEARS WARRENTY, and LIFE-TIME GURANTEE.