Yu Lin Li

Sinotrust Marketing Research & Consulting provides business information, market research, consulting, and database marketing services. The private company is based in Beijing, China.

China Huaneng Group Hong Kong Co. Ltd. owns and operates power plants and other state-owned assets. The company is based in Hong Kong, Hong Kong. The Chinese company is ultimately controlled by the Government of China.

Beijing Capital Group Co., Ltd. develops real estate properties. Its businesses also include environmental protection, infrastructure, and financial services. The firm offers water treatment services, waste management, expressway and rail transport construction and operation, and investment fund services. The company was founded by XiaoGuang Liu on October 26, 1994 and is headquartered in Beijing, China.

Dezhou United Petroleum Technology Co., Ltd. engages in the research, development, production, and sales and leasing of special tools and equipment for oil drilling. It provides maintenance and leasing services of petroleum equipment, drilling tools, accessories and ancillary products, design, manufacturing, sales and maintenance of geothermal recirculation equipment and environmental protection equipment, and technical consulting services, negative pressure environmental protection recycling devices production and sales, drilling rigs, drill bits, profile control water plugging pumps, plugging agents used in profile control water plugging technology, grouting pumps, drilling mud non-landing systems, sewage sludge treatment systems, wellhead sludge recovery devices, oil and gas production wellhead devices , design, manufacturing, sales and maintenance of valves, choke and kill manifolds, technical consulting services; petroleum mechanical processing; drilling of oil, natural gas, coal bed methane, deep and shallow geothermal, directional wells, horizontal wells, profile control and water injection Engineering and technical services; mining disaster management, surface plating business; construction and installation projects, sales and installation of mechanical and electrical products; general cargo transportation; import and export of goods and technology. The company was founded in September 1961 and is headquartered in Dezhou, China.