明泰铝业：明晟新材、明泰交通新材料、明泰科技为专精特新企业

Group 1 - The core viewpoint of the article is that Mingtai Aluminum (601677) has confirmed its subsidiaries as specialized and innovative enterprises and high-tech companies [1] Group 2 - Mingtai New Materials, Mingtai Transportation New Materials, and Mingtai Technology are identified as specialized and innovative enterprises [1] - Yirui New Materials, Taihong New Materials, Mingtai New Materials, Mingtai Transportation New Materials, and Mingtai Technology are recognized as high-tech enterprises [1]