... least 4. We ever exported antenna telecom tower to Vietnam. antenna telecom tower origin countryLiaocheng city ,Shandong province ,China ... steel towers, steel tube poles ,substation structures and tower crane. Specification 500KV and below Annual production capacity 30 ... Co., Ltd.Address (Beijing office): Room 2305,Block 10,Yiyuanju,Courtyard 4,Cuiwei Road, Haidian District, Beijing, ChinaPostcode ...