- Jilin Tianze Pipe Industry Co., Ltd.
- Address:No. 106, Shangdong Street, Gongping Road, Erdao District
- Yancheng Haide Machinery Manufacturing Co., Ltd.
- Address:2409 room,Feichi International building,yancheng city
- Protechno
- Address:9 na A # 510 Habana Habana Cuba
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