Shengli Oilfield Changan Holding Group Co., Ltd. is a high-tech enterprise, which has 12 subsidiaries and branches with a registered capital of185.29 million yuan. The company is mainly engaged in research and development, technology transfer and service of biochemical technology; R&D, production and sales of electronic instruments and meters; Production, sales, technical development, research and technical services of oilfield geological oil production equipment; Architectural decoration; Purchase real estate; Catering services, etc.