Located at First 10, North Jiuxianqiao Road, Chaoyang District of Beijing, Beijing Changyu-Lihua Hydraulic Systems Engineering Design Co. Ltd. is a subsidiary company of Zhangjiakou Great Wall Hydraulic Cylinder Co., Ltd., engaged in designing and producing non-standard hydraulic equipment and hydraulic system, such as seamless steel pipe cold-drawing machine, hydraulic system for engineering, automobile, aviation, ship building, mining industry, high-speed train and so on. The products involve ...