Engages in the production, sales, installation, and maintenance of a full range of communication towers, broadcasting and television towers, microwave towers, observation towers, monitoring towers, single-pipe towers, lightning protection towers, full range of power towers, steel pole towers, steel tube frame structures, decorative towers, training towers, hardware, chimney towers, beautification towers, wind measurement towers, integrated quick-installation base stations; production and sales of highway guardrails, sign poles, galvanized metal structures; communication base station leasing and maintenance; construction of steel structure projects, foundation and substructure construction, lightning protection and grounding construction; illumination projects; technical consulting, installation services, tower maintenance, and dismantling (operations as permitted by relevant laws and regulations).