Touyun Biotech Group Limited, an investment holding company, designs, develops, manufactures, and sells packaging products in Hong Kong, the People's Republic of China, Europe, North and South America, and internationally. It operates through four segments: QR Code Business, Packaging Products Business, Treasury Investment Business, and Chlamydomonas Reinhardtii Products Business. The QR Code Business segment provides QR codes on product packaging and solutions, including made-to-order solutions. The Packaging Products Business segment manufactures and sells watch and jewelry boxes, eyewear cases, bags and pouches, and display units. The Treasury Investment Business segment invests and trades in securities, as well as offers money lending, placing and underwriting, securities brokerage, and margin financing services. The Chlamydomonas Reinhardtii Products Business segment produces and sells chlamydomonas reinhardtii, micro-algae, and related products. It also provides business intelligence IT solution, online advertising display, asset management, and corporate management services. The company was formerly known as China Touyun Tech Group Limited and changed its name to Touyun Biotech Group Limited in May 2021. Touyun Biotech Group Limited was founded in 1989 and is headquartered in Wan Chai, Hong Kong.