Shuangxin Petroleum Machinery Corporation, Ltd. is a Chinese high-tech private enterprise, specializing in design, manufacture and sales of petroleum and chemical equipment. Its main product covers wellhead charismas tree assembly, drilling fluid manifold, choke and killing manifold, valve series, pumping unit series, gear reducer, octane rating tester, etc.

The Company is a member of the 1st class network supplier for China National Petroleum Corporation and China petroleum Co., Ltd. And it is the member unit of CPMEC as well. It is certified to ISO quality management system, IS14000 environment management certificate of conformity, acquires API certificate and national special equipment production license.

The company is awarded to be the technology center of Yancheng city, Jiangsu province highly developing enterprise, national grade Hi-tech technology enterprise. "Yong-jun Brand" drilling fluid manifold is awarded to be the famous brand product in Jiangsu Province, famous brand product in China petroleum and petrochemical equipment industry, and to be one of China Petroleum Equipment Manufacture Top-50 enterprise. "Shuangxin" is appraised the famous trademark of Yancheng.