What are the heavy industrial zones in Chongqing and the famous factories of construction machinery?

There are: Chongqing Gangcheng Industrial Park; Chongqing Xipeng Industrial Park; Chongqing Airport Industrial Park; Chongqing Jianqiao Industrial Park; Chongqing Luohuang Industrial Park; Chongqing Jingkou Industrial Park; Chongqing Nan 'an Tea Garden Industrial Park; Chongqing Gangcheng Industrial Park; Chongqing Jiulong Industrial Park. 1: Chongqing zhibang construction machinery (group) co., ltd., Chongqing lianglu industrial park; Company address: 3-4, No.58 Aoti East Road, Jiulongpo District, Chongqing; 2. Chongqing Pengchuang Construction Machinery Co., Ltd. _ Baidu Encyclopedia; Company address: Baimadang, High-tech Zone, Chongqing; 3. Chongqing Rihe Dongpu Construction Machinery Co., Ltd.; Sanxikou Tongxin Industrial Park, Beibei District, Chongqing; 4. Chongqing Kasong Construction Machinery Maintenance Co., Ltd., Address:No. Dashiba 1 17, Jiangbei District, Chongqing; 5. Xugong Chongqing Construction Machinery Co., Ltd.; Address: Huafu Road, Zone C, Jiulong Industrial Park, Jiulongpo District, Chongqing;