Zhao Jiuzhan, deputy mayor of Beichen District of Tianjin, and Wei Heming, director of Science and Technology Bureau, came to the factory for guidance.
Zhao Jiuzhan, deputy mayor of Beichen District of Tianjin, and Wei Heming, director of Science and Technology Bureau, came to the factory for guidance.
Zhao Jiuzhan, deputy mayor of Beichen District of Tianjin, and Wei Heming, director of Science and Technology Bureau, came to the factory for guidance.
Zhao Jiuzhan, deputy mayor of Beichen District of Tianjin, and Wei Heming, director of Science and Technology Bureau, came to the factory for guidance.