The 2015 China Petroleum and Petrochemical Engineering Technology and Materials and Equipment Promotion Conference is hosted by the China Equipment Management Association and Yanchang Oilfield Co., Ltd., and co-organized by Shaanxi Yanchang Petroleum Materials Co., Ltd., Lanzhou Lanshi Group Co., Ltd., Shaanxi Equipment Management Association, Zhongman Petroleum and Natural Gas Group Co., Ltd., Shaanxi Yanchang Petroleum Machinery Equipment Manufacturing Co., Ltd., Suzhou Changsheng Chain Transmission Co., Ltd., and the Advanced High-tech Enterprises Association.