Core Viewpoint - The article discusses allegations against Juzhi Biotechnology regarding potential fraud in their collagen products, specifically questioning the accuracy of the testing methods used to measure collagen content [1][10]. Group 1: Allegations and Testing Methods - A video and post alleging that Juzhi Biotechnology's collagen product cannot be detected for collagen content have sparked significant discussion [1]. - The controversy centers around the testing method used, with the blogger claiming that the "biuret method" (双缩脲法) is flawed for complex cosmetic formulations, as it may yield inflated results due to interference from other ingredients [3][8]. - Juzhi Biotechnology claims to have used the biuret method as per the Chinese Pharmacopoeia and relevant industry standards to test their product [7]. Group 2: Product Versions and Consumer Impact - The blogger pointed out discrepancies between the product versions sent for testing, indicating that Juzhi Biotechnology submitted a 2.0 version while the blogger tested a 1.0 version, which has since been reportedly "shelved" [8][9]. - Consumers have reported that the 1.0 version of the product is no longer available on major e-commerce platforms, while the 2.0 version remains for sale [10]. Group 3: Regulatory Attention - The incident has attracted regulatory scrutiny, with local market supervision authorities acknowledging the situation and beginning investigations [10]. - The ongoing controversy has led to a notable decline in the company's stock price, with reports of a 10% drop following the allegations [10].