Dear investor, hello. The Company won five bid sections of the 10,000-ton battery-grade lithium carbonate project at the Zabuye Salt Lake, Xizang, for East China Engineering Science and Technology Co., Ltd. in December 2021. The Company will disclose the number of shareholders at the corresponding period end in its periodic reports. For the number of shareholders not disclosed for a specific month, investors are kindly requested to call the Company's Board Office at 010-67986889 and provide relevant shareholder identification documents for inquiries.

Dear investor, hello. The Company won five bid sections of the 10,000-ton battery-grade lithium carbonate project, totaling RMB 273 million, at the Zabuye Salt Lake, Xizang, for East China Engineering Science and Technology Co., Ltd. in December 2021, accounting for 47.07% of the Company's audited main business revenue in 2020. In the field of lithium extraction from salt lakes, the Company has a leading technological advantage and core technological engineering application advantages accumulated from years of salt separation from high-salinity water technology research and project experience, thereby achieving efficient and cost-effective operational results. This will have a positive impact on the Company's future performance and business expansion in the respective field.

Dear investor, hello. The Company is able to provide clients with technical solutions, process packages, equipment, and construction operation services related to lithium extraction, despite having no lithium mineral resources available.

Dear investors, hello. The Company's main business focuses on the reutilization of sewage resources and the deep treatment of industrially complex wastewater. Key companies in the same industry include Juwu Hi-Tech, Sunresin, Shanghai Emperor of Cleaning Hi-tech, and Suntar, among others. Currently, most enterprises have a broad business scope with strong comprehensive capabilities, but each company has different business focuses, leading to differences in relative competitive advantages in the industry chain. The Company's main competitive strengths lie in its strong independent research and development capabilities and rich operational experience. It can provide customized treatment based on different water quality characteristics and has successfully extracted sodium sulfate, sodium chloride, sodium carbonate, lithium salt, etc., from highly saline wastewater, positioning itself as a leader in the field of wastewater resource utilization. For detailed information, please refer to the prospectus and periodic reports disclosed by the Company on the media designated by the China Securities Regulatory Commission.

engaged in the wholesale (without storage) of 35 types of hazardous chemicals such as toluene, acetone, hydrochloric acid, sulfuric acid, liquefied petroleum gas, methane, methanol, dimethyl ether, and solvent oil (closed cup flash point ≤60℃); sale of chemical products (excluding easily producible toxic and hazardous chemicals) and plastic raw materials; sales of liquid paraffin; technology promotion; sales and after-sales services of environmental protection water treatment equipment; technical consultation; general contracting of engineering projects; engineering survey and design; project management of construction projects; operation contracting of environmental protection projects; membrane cleaning services; and sales of water treatment filtration equipment and consumables such as membrane elements, filter cartridges, and spare parts.

Dear investor, hello. The Company sells by-products such as sodium carbonate, sodium chloride, and sodium sulfate extracted from comprehensive water treatment solution projects provided to clients. In lithium extraction projects, the Company can provide process packages, equipment, project construction, operation, etc., and the extracted battery-grade lithium carbonate belongs to the owner. Thank you for your attention.

Dear investor, hello. The Company has signed relevant contracts with East China Engineering Science and Technology Co., Ltd. for the project with a total amount of RMB 273 million, which is currently progressing according to the planned schedule. Thank you for your attention.

Dear investor, hello. The Company has successfully extracted sodium chloride, sodium sulfate, and sodium carbonate from industrial high-salinity wastewater.

Dear investor, hello. The Company has been coordinating with relevant authorities for the declaration work.

Dear investor, hello! The Company will disclose the number of shareholders at the corresponding period-end in its periodic reports. For the number of shareholders not disclosed for a specific month, investors are kindly requested to call the Company's Board Office at 010-67986889 and provide relevant shareholder identification documents for inquiries.

Dear investor, hello. The Company did not participate in business or construction related to the Winter Olympics. Thank you for your attention.

Dear investor, hello. The Company focuses on providing solutions, equipment, and operational services for zero-discharge salt separation projects and other related projects in the hydrogen energy production sector, centered around water treatment and water resource recycling. The Company collaborates with leading hydrogen energy companies such as Baofeng Energy, Meijin Energy, and Huachang Chemical. Thank you for your attention.