A subsidiary of Lanzhou Shi Lan Group Co., Ltd.

Shi Lan Group owns Lanzhou Shi Lan Petroleum Equipment Engineering Co., Ltd., Lanzhou Petrochemical Machinery Engineering Co., Ltd., Lanzhou Shi Lan Machinery Manufacturing Co., Ltd., Lanzhou Shi Lan Precision Machinery Equipment Co., Ltd., Lanzhou Shi Lan Heavy Industry New Technology Co., Ltd., Lanzhou Shi Lan Casting Co., Ltd., Lanzhou Shi Lan Forging Heat Treatment Co., Ltd., Lanzhou Shi Lan Real Estate Development Co., Ltd., Lanzhou Lanshi Spherical Tank Engineering Co., Ltd., Lanzhou Lanshi Chemical Machinery Technology Engineering Co., Ltd. Lanzhou Lanshi Environmental Protection Engineering Co., Ltd., Lanzhou Shi Lan Property Management Co., Ltd., Gansu Machinery and Electronics Workers College Lanzhou Shi Lan Group Company Branch (simulated legal person operation) and other 15 holding and shareholding subsidiaries; Sheng Da Service Department (Marketing Department), Sunshine Commercial Port Management Department, News Center, Material Recovery Company, Power Company and Testing Center.