Group 1 - The core products of Tianan Chemical include AKD and phosgene-derived products such as stearyl chloride and chloroformate, which are widely used in paper chemicals and pesticide intermediates [2] - Tianan Chemical has established a complete production line for "phosgene-stearic acid-stearoyl chloride-AKD synthesis," significantly reducing the production costs of AKD products [2] - The company has formed long-term stable partnerships with several large paper enterprises both domestically and internationally [2]