1. Guangzhou Hydropower Installation Co., Ltd. near Bailan Road, Liwan District, Guangzhou City, Guangdong Province 2. Guangzhou Ward Hydropower Installation Co., Ltd. near No.3 Hengfeng Street, Nansha District, Guangzhou City, Guangdong Province 3. Guangzhou Hydropower Installation Engineering Company near No.298 County Road, Nansha District, Guangzhou City, Guangdong Province 4. Guangzhou Weihao Hydropower Installation Co., Ltd. near No.3 Hongzhu Road, Huadu District, Guangzhou City, Guangdong Province