莱茵生物：主要从事天然健康产品的生产经营业务

Core Viewpoint - The company, Rhein Biotech, focuses on the production and operation of natural health products, emphasizing the research and production of plant functional ingredients, with a specific mention of its product, orotic acid, which is a raw material for the antiviral drug Oseltamivir [2] Group 1 - The company's sales of orotic acid currently represent a small proportion of its overall revenue [2] - The company's facility in Indiana, USA, is dedicated to the production of natural sweeteners and certain functional ingredients, with normal operations reported for its overseas business [2]