Zhengzhou Dayu Machinery Co., Ltd. is a leading structural machinery supplier in China, was established in September 1992, Headquarters is located at Zhengzhou, Henan Province, China. Covering above 18, 000 square meters and registering capital of RMB 50 million. Dayu supply structural machinery base on ISO9001, ISO14001 management systems, and are CE,GOST certified.