Group 1 - The core viewpoint of the article highlights that Jindan Technology (300829) is a leading company in the domestic lactic acid industry, focusing on the research, production, and sales of lactic acid and its derivatives [1] - The company's main products include high-purity lactic acid, refined lactic acid, quality lactic acid, food-grade lactic acid, feed-grade lactic acid, calcium lactate, sodium lactate, potassium lactate, lactic acid methyl ester, and lactic acid ethyl ester [1] - Lactic acid, as a naturally occurring organic acid in the human body, has good biocompatibility and can be fully absorbed by the body, making lactic acid products useful in various applications such as food, feed, and pharmaceuticals [1] Group 2 - In the food industry, lactic acid serves as an acidulant, pH regulator, preservative, and flavoring agent, while in the feed industry, it is used as an acidulant, preservative, and bactericide [1] - Polylactic acid (PLA), generated through the polymerization of lactic acid, is an emerging environmentally friendly biodegradable material with unique properties, applicable in textiles, plastics, packaging, agricultural films, modern medicine, and 3D printing [1]