Yongqing Environmental Protection 20 10 went public, mainly engaged in desulfurization out of stock, waste heat power generation and environmental planning consultation. 20 1 1 entered the field of heavy metal pollution control and soil remediation, forming a new business growth point. At present, it has become an environmental protection enterprise that provides all-round environmental governance services and has a complete industrial chain. Yongqing Environmental Protection is the first enterprise to industrialize ion mineralization stabilization technology, which has certain technical advantages in heavy metal pollution control. With the advantages of Hunan Province and technology, the company is expected to continuously obtain a large number of heavy metal pollution prevention and control projects in Xiangjiang River, and the income from soil remediation business is expected to achieve rapid growth.

2. Tian Rui Instruments (300 165)

Tian Rui Instruments is a high-tech enterprise specializing in the research, development, production and sales of chemical analytical instruments and related software. The downstream market of products mainly includes environmental protection and industrial testing and analysis, in which the income from environmental protection market is the main source of income for the company. Thanks to the drive of environmental protection policies and the rapid development of the industry in recent years, the company's operating income has increased rapidly. At the same time, the company is a leading manufacturer of heavy metal detection instruments in China, and its products include dozens of convenient heavy metal detection instruments and online monitoring instruments, all of which are independently developed products.

3. Sander Environment (000826)

Sander Environment is mainly engaged in the disposal of urban garbage and industrial solid waste. The company extends the industrial chain to industrial hazardous waste, medical waste, kitchen waste treatment, waste resource utilization (recycling and dismantling of scrapped cars, recycling and dismantling of discarded electrical and electronic products), and original technical consulting services such as sewage treatment, water supply and equipment. At present, the comprehensive layout of the industrial chain of water and solid waste treatment has been realized, giving play to synergy and scale effect, and occupying a leading position in the rapid development of the industry.

4. dongjiang environmental protection (002672)

Dongjiang environmental protection is mainly engaged in waste treatment and comprehensive utilization. Affected by the slowdown of macroeconomic growth, the amount of garbage produced by industrial enterprises has decreased, and the competition in the same industry has become more intense. The company's operating income and profits declined in the first quarter. The company's industry is cyclical and greatly influenced by macroeconomic fluctuations. However, the company is in the leading position in technology and management, has the status of a listed company, and has smooth financing channels. The continuous downturn in the industry can provide opportunities for companies to acquire in different places.