Toung Loong Textile Mfg. Co., Ltd. manufactures and sells functional synthetic yarns and sewing threads primarily for apparel and industrial applications. The company produces air textured yarns (ATY), draw textured yarns (DTY), shape control twist yarns, yarn dyes, functional synthetic yarn dyes, and high-end sewing threads including zipper sewing threads, spun polyester threads, polyester yarns, nylon threads, and bonded threads; it also offers label yarns, Velcro yarns, and woven yarns. Founded in 1960 and headquartered in New Taipei City, Taiwan, Toung Loong operates factories in Taoyuan and Changhua, Taiwan, as well as a production facility in Vietnam through its subsidiary Toung Loong Textile Mfg (Vietnam) Co., Ltd., serving markets in Asia, Europe, the Americas, and Oceania. The company, the first textile firm listed on the Taiwan OTC market in 1996 (ticker: 4401.TWO), emphasizes innovation through processes like SpringFil for natural-like hand feel and recyclability, and Shape Control Twist (SCT) to preserve functional fiber shapes; it holds annual OEKO-TEX and bluesign certifications, expands recycled water use and solar panels, and pursues carbon neutrality while introducing automation and AI for customized production. Recent financial performance shows revenue growth of 39% in fiscal 2024 and 4% in Q2 2025, with a Q3 2025 earnings report issued in November 2025.