朗源股份索赔递交立案，两类投资者还可加入

Group 1 - The core issue involves investor lawsuits against Langyuan Co., Ltd. due to violations of information disclosure, with multiple cases currently under judicial review [1][4] - The lawsuits stem from financial fraud related to the performance commitments of a subsidiary, resulting in significant consequences for Langyuan and its executives [1][4] - Investors who suffered losses due to false statements made by the company are eligible for civil compensation under relevant laws, with specific time frames outlined for claims [1][4] Group 2 - On April 28, Langyuan announced it received an administrative penalty decision from the Shandong Securities Regulatory Bureau, following an investigation into its financial reporting [2][5] - The investigation revealed that in December 2018, Langyuan acquired 51% of Guangdong Youshi, which was then included in its consolidated financial statements [2][5] - In 2019, to meet performance commitments, the subsidiary engaged in fictitious transactions to inflate revenue, costs, and profits, leading to false financial statements for that year [2][5] - Despite a correction announcement in September 2020, the revised financial data still contained inaccuracies, prompting severe penalties from the regulatory authority [2][5]