Beijing China Sciences Runyu Environmental Technology Co.,Ltd. (hereinafter referred to as "CSET”), as an environmental protection industry platform led by scientific and technological innovation, serves the country“ Green development” Based on the scientific and technological resources of the Chinese Academy of Sciences and many years of advanced experience in the industrialization of scientific and technological achievements, we are committed to providing the best feasible technology (BAT) and the best environmental practice (BEP) for the sustainable development of the environment. The goal is to develop into“ Technology changes the environment” Of the company. CSET takes the lead in establishing a circular economy industrial park model with domestic waste incineration and power generation projects as the main body, and cooperatively disposing of kitchen waste, sludge, medical waste and other wastes, with“ Cogeneration” The model provides heat supply services to surrounding industrial enterprises, and earlier realized the engineering demonstration of the transformation and expansion of the circulating fluidized bed process incineration power plant to the grate furnace process without stopping production. On this basis, the company actively seeks business expansion, continues to optimize the business structure, and forms a business structure with domestic waste treatment business as the core, actively expands industrial hazardous waste treatment and disposal business and agricultural and forestry waste recycling business, while driving the coordinated development of environmental protection equipment sales and technical services. CSET has officially registered on the A-share GEM on July 8, 2022, with the stock code of 301175.

Ningbo China Sciences Green Power Electric Co., Ltd. was established in 2005 and is responsible for the disposal of domestic waste in Zhenhai District, Ningbo City. In 2014, CSET Ningbo started its comprehensive technical transformation (from circulating fluidized bed incineration to grate furnace) and completed it without stopping production. After being put into operation in 2017, the two grate incinerators can process up to 1,200 tons of domestic waste per day, which made it the “demonstration project” for incineration project transformation. 1200 t/d Processing scale 2 x 600 t/d Incinerator 12 + 12 MW Generator set

Cixi China Sciences Zhongmao Environmental Protection Thermal Power Co., Ltd. established in 2007, is responsible for the disposal of domestic waste in all areas of Cixi City, Zhejiang Province. While using the thermal energy generated by domestic waste incineration to generate electricity, the project also adopts the "CHP" mode to supply heat to surrounding industrial enterprises. In 2017, CSET Cixi started its comprehensive technical transformation to grate furnace and the completion of which increased the project's processing capacity to 2250 tons/day, thereby fully meeting the needs of Cixi City for recycling, reduction and harmless disposal of domestic waste. By setting a benchmark example for the technical transformation and expansion of domestic large-scale WTE projects, it has made significant contributions to the ecological construction and energy conservation and emission reduction of Cixi City. 3000+750 t/d Processing scale 4x750 + 750 t/d Incinerator 2x15+25+45 MW Generator set

Mianyang China Sciences Miantou Environmental Service Co., Ltd. was established in 2013 in Fucheng District, Mianyang City, Mianyang China Sciences Miantou Environmental Service Co., Ltd. ("CSET Mianyang") has a designed daily processing capacity of 1,500 tons of domestic waste, 200 tons of kitchen waste, 200 tons of municipal sludge and 10 tons of medical waste. Through continuous efforts,Mianyang project successfully established a circular economy industrial park model and was rated as a national resource recycling base. With newly added kitchen waste, sludge and medical waste treatment business under this innovative model, this project realizes the synergistic recycling treatment of various wastes with greatly improved economic benefits. With the support of CSET, this project is actively extending to the upstream and downstream of the industrial chain and trying to establish business synergy advantages (including providing systematic services such as domestic waste transfer and treatment to local governments). In addition, based on the experience in the operation and management of medical waste treatment projects, and the technical accumulation in incineration and pollution control, etc., the company is also seeking to further expand its hazardous waste treatment and disposal business. 1500 t/d Processing scale 3 x 500 t/d Incinerator 20 + 12 MW Generator set

Established in 2014, Fangchenggang China Sciences Green Energy Co., Ltd. is responsible for the disposal of domestic waste in the Fangcheng District, the port area of Fangchenggang City and some areas of Dongxing City. This project uses internationally advanced mechanical grate incinerators and has a daily processing capacity of 1,000 tons. As a typical example of "small and refined" WTE incineration projects in the whole of Guangxi or even the country, it plays an important role in improving the sanitation environment and quality of the city in Fangchenggang City. 1000 t/d Processing scale 2 x 500 t/d Incinerator 9 + 12 MW Generator set

Santai Zhongke Renewable Energy Co., LTD. (hereinafter referred to as "Santai Zhongke"), established in 2017, covers the whole county of Santai County, Yanting County and part of Zitong County, Mianyang City. The project adopts grate furnace incineration process, and the designed waste treatment capacity is 1,500 tons/day. The first phase of the project has been put into operation, and the treatment scale is 1,000 tons/day, which greatly promotes the construction of local ecological and economic civilization. 1000+500 t/d Processing scale 2 x 500 +500t/d Incinerator 25 MW Generator set