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, Treasury Investment, and Chlamydomonas Reinhardtii Product Business. The QR Code Business segment provides QR codes on product packaging and solutions, and advertising display services.