ChangSha Zoomwolf Machinery CO.,LTD is a high-tech enterprise, which is situated in Changsha, Hunan Province, China, known as the capital of engineering machinery. We are engaged in research, development, manufacturing, sale and service of construction machinery and spare parts. We mainly manufacture concrete placing booms ，trailer-mounted concrete pumps, truck-mounted line concrete pumps, tower cranes and building hoists. We also produce pumping mechanism and other core co ...