Ningxia Machinery Research Institute CO.,LTD. Add: East Side of No.17 Road, Yinchuan (State-level) Economic and Technological Development Zone, Ningxia, China Tel: +86-951-5044131 5044247 Fax: +86-951-5035324 Postcode: 750002 E-mail:jxnx@nxjixie.com Website: http://www.nxjixie.com