3. Wanders (688178): the company's main business is waste pollution reduction and remediation business, and difficult wastewater treatment business.
4. Wanbangda (300055): the company is for the coal chemical industry, petrochemical industry, electric power and other downstream industries to provide large-scale projects in the industrial water treatment system all-round, full-life-cycle services for industrial water treatment professional service providers. Including a full range of system construction services and system operation services, to meet customers in the production and operation of pure water, circulating cooling water, desalinated water and other industrial water needs and water treatment of environmental protection standards, and through their own professional and technical capabilities for customers and society to save resources, reduce costs, the company has become a company with its excellent design and project management services renowned industrial water treatment system services industry, known as the Industrial water system doctor.
5. Shanghai Wash (603200): the company's main business for the water treatment services business and air duct cleaning business. The company's water treatment business includes chemical sales and services, water treatment system operation and management, dosing equipment sales and installation and water treatment equipment integration, covering the water treatment system from the construction to the operation of different stages of the overall solution.
6. Shanghai environment (601200): the company's main solid waste disposal, urban sewage treatment and other environmental municipal project investment, construction and operation. The company's sewage business is mainly municipal sewage treatment business, including is the construction and operation of domestic sewage treatment plant. The company's subordinate sewage treatment plants are located in Shanghai and Chengdu. Located in Shanghai Longhua water purification plant, Minhang water purification plant, Changqiao water purification plant and the Friends of the United Bamboo Garden to deal with Shanghai municipal sewage 1.76 million tons / day, of which the Friends of the United Bamboo Garden for Shanghai's second largest sewage treatment plant.
7. Donghua Science and Technology (002140): the company has strong technical advantages in the field of industrial wastewater treatment, with high salt content of sewage treatment, anaerobic treatment of high concentration of organic wastewater, PTA wastewater treatment, A/O treatment, acrylic industrial wastewater treatment, and other practical technologies, has completed more than 1,000 environmental pollution control projects, and has won the national and provincial scientific and technological progress awards. The company has completed more than 1,000 environmental pollution control projects and won national, provincial and ministerial scientific and technological progress awards. The company has successfully completed the "zero-discharge" project of sewage of China Coal Tuk fertilizer, which has established the company's leading position in the field of "zero-discharge".Announcement in the evening of December 14, 2017, the company formally signed the "General Contract for Air Separation Unit, Boiler Unit, Demineralized Water and Wastewater Treatment Unit of 1 Million Tons/Annual Synthesis Gas to Ethylene Glycol Phase I Project of 600,000 Tons/Annual Ethylene Glycol Project of Xinjiang Tianye Company Limited" with Tianye Huizhou. Contract", with a contract price of RMB1.084 billion at provisional pricing. The successful fulfillment of the contract will have an impact on the Company's operating income and operating results in 2018, 2019 and other years.
8. Oriental Garden (002310): Subsidiary Shanghai Liyuan focuses on the research and development, manufacture and application of water treatment processes, technology and equipment, while Zhongshan Environmental Protection is mainly engaged in the construction of sewage treatment projects and the operation of sewage treatment facilities. Both subsidiaries have been operating in their respective fields for many years, in technology, market, management and other aspects have accumulated strong competitive advantages, and the company in customer resources **** enjoy, technology integration, product diversification, project implementation, raw material procurement, etc. There is a strong synergistic effect, which is conducive to accelerating the development of the company's water treatment business, and further increase the company's market share in the field of ecological governance, laying a foundation for the rapid development of the company's ecological management business to lay the foundation for the rapid development of the company's eco-governance business.
9. Dongjiang Environmental Protection (002672): the company's holding subsidiary Humen Green Source sewage treatment fee income right as the underlying assets, the issuance of asset-backed securities, the actual financing of 300 million yuan, the Department of Guangdong Province and the Shenzhen Stock Exchange, the first single of the PPP + ABS business;
10. Central Plains Environmental Protection (000544): in 2017, the company's subordinate 13 water operations units, under the premise of ensuring safe production and discharge of water up to standards, external water quantity mapping, internal optimization of the control process, scientific deployment of resource utilization, sewage treatment operation reached a new high, the annual **** treatment of sewage 463.01 million cubic meters, water treatment 270.03 million cubic meters. The company's main business for urban sewage treatment and urban centralized heat supply, the business operated by a strong regional nature, the main operating area for the Zhengzhou region. The company's market share in the region is 50% for sewage treatment and about 35% for heat supply; Central Plains Environmental Protection Water Dengfeng Co., Ltd. is a wholly-owned subsidiary of the company, which acquires and operates Dengfeng City Sewage Treatment Plant on a TOT basis. The design scale of the plant is 30,000 cubic meters of sewage treatment per day, the treatment process adopts the improved SBR process, the service scope is the central urban area of Dengfeng City, the service area is about 10 square kilometers, the service population is about 150,000;
11. Zhongjian environmental energy (300425): the largest domestic magnetic separation of the water purification equipment manufacturing enterprises, master purification of the core technology, the black-smell river treatment experience;. In 2017, the environmental protection business income of 594 million yuan, centrifuge business income of 211 million yuan, accounting for more than 99%. The company is based on magnetic separation water purification technology, while combining biochemical treatment technology, biological - ecological water body repair technology, membrane technology and other applicable technologies in the field of wastewater treatment, to provide customers with complete sets of wastewater treatment equipment, operation services, engineering turnkey services and overall solutions.
12. Holding shares (603903): in November 18, the company won the MFA (Mercedes-Benz front-drive models) production support facilities area phase II - sewage treatment system project, the winning bid price of 53.315 million yuan. The company owns 52 patents and 14 software patents, such as "dual-parameter aeration control system for wastewater treatment system", "sequential batch wastewater treatment device" and "combined treatment system of inner-circulation aeration biofilter and clarifier". 52 patented technologies and 14 software copyrights, as well as Advanguard technology for deep treatment of industrial wastewater, the second generation of improved BAF technology, SG-Mixer Drum sludge alkaline stabilized drying treatment technology, municipal sludge graded phase anaerobic digestion technology, SG-DACT drum dynamic aerobic high-temperature fermentation technology and other proprietary technologies, and a number of technologies included in the national key Many of these technologies are listed in the list of national key practical technologies for environmental protection. In addition, the R&D team of the company has undertaken R&D projects of the National 863 Program, National Water Special Project and Beijing Science and Technology Commission, etc. The company's advantages in technological innovation have been widely recognized. Based on the third-party operation and management service of environmental infrastructure, the company adopts the replicable model of "medium assets, heavy service and regional operation", and carries out business activities in the fields of environmental development strategy consulting, investment and financing of wastewater treatment plants, wastewater treatment plant construction, upgrading and operation, construction of sewage sludge associated with wastewater treatment plants, and sales of core technology products. We are also engaged in business activities in the areas of investment and financing of wastewater treatment plants, construction and upgrading and operation of wastewater treatment plants, construction of sludge associated with wastewater treatment plants and sales of core technology products.