On May 28, the strategic cooperation signing ceremony among Tongwei Co., Ltd, Zhonghuan Co., Ltd and Chengdu National Testing Center of PV Products was successfully held in Shanghai during the 2018 SNEC PV Expo. Chairman Liu, Mr. Shen Haoping, general manager of Tianjin Zhonghuan Group and Mr. Ye Yuanming, dean of Chengdu National Testing Center of PV Products attended the ceremony and received interviews from mainstream media.