Toung Loong Textile Mfg. Co., Ltd. engages in the development, manufacture, and sale of functional synthetic yarns. Its products include air textured yarns, draw textured yarns, yarn dyes, shape control twist yarns, air textured covered yarns, and alpha yarns. The company was founded by Tien Tsai Yu, Chin Mao Chen, Chin Sen Chen, and Ta Tung Lin in 1960 and is headquartered in New Taipei, Taiwan.