Diodes Brands

Seoul Viosys

As of 2019, Seoul Viosys is a global LED specialist company with its sales revenue of about 300 billion won which belongs to the top class of LED market in the world. Approximately 4,000 patents lead the product market with differentiated technology, solidify the LED market, and provide LED products leading the current global sales network.


Sensor Electronic Technology, inc. (SETi) is proud to be part of Seoul Semiconductor and Seoul Viosys. Sensor Electronic Technology, Inc. (SETi) is the world’s leading supplier of deep UV LEDs; LEDs with emission wavelengths shorter than 365nm. Using our proprietary and patented technology, we develop, manufacture and sell standard LED products under the UVTOP® trademark and custom LED products and solutions under the UVCLEAN® trademark into public and private sectors. We are committed to meeting and exceeding the needs of our customers and stakeholders through the highest levels of quality management. We develop, manufacture and offer a broad portfolio of UV-A, UV-B and UV-C LED products and application solutions.