Wooriro Co., Ltd, together with its subsidiary, manufactures and sells optical communication products in South Korea, the United States, Europe, China, and internationally. The company offers planar lightwave circuit products, including splitter chips, wafers, and modules, as well as DWDM and CWDM/LAN-WDM chips. It also provides photodiodes (PDs), such as PIN TIA ROSA, PIN photodiode chips, APD ROSA, APD linear TIA ROSA, PIN limiting/linear ROSA, PIN photodiode chips, APD TIA TO and ROSA, APD TO with burst-mode TIA, avalanche photodiode chips, PIN linear TIA ROSA, PIN photodiode chips, PIN PD chips, quadrant photodiode chips, APD modules, InGaAs PIN PD TO-CAN, InGaAs PIN PD chips, InGaAs APD chips, and laser range finder receivers; and negative feedback avalanche diodes, and single photon avalanche diodes with internal TEC and without TEC. In addition, the company offers IT storage devices, such as HDD, SSD, etc. It serves optical communication components manufacturers. The company was formerly known as Wooriro Optical Telecom Co., Ltd. and changed its name to Wooriro Co., Ltd in April 2015. Wooriro Co., Ltd was founded in 1998 and is headquartered in Gwangju, South Korea.