Investor Relations Activity Log for February 17–18, 2025

Investor Relations Activity Categories

● Targeted Audience Research         □ Analyst Conference

□ Media Interview             □ Performance Briefing

□ Press Conference           □ Roadshow Event

□ On-site visit

● Other     Teleconference    

Names of Participating Organizations and Personnel

CITIC Securities: Zhou Guangyu, Li Jiaming

Guosheng Securities: He Yaxuan, Cheng Longge, Zhang Tianyi

Huaan Securities: Hu Qianqian

Guoxin Securities: Zhang Yao

Hongyi Yuanfang Fund: Hua Peiqi

Gaoteng International Asset: Lü Dong

Taiping Fund: Qiu Peiyu

Ricky Futures: Liu Qiyu

China-Canada Fund: Kang Pei

Huatai Baoxing Fund: Zhang Lichen

Pacific Securities: Li Guang

Time

2025 Year 2 Month 17 Day -18 Day

Location

3D Chemistry Company Headquarters + Teleconference

Name of the Receiving Personnel from the Listed Company

Board Secretary: Zhang Jun

Securities Affairs Representative: Liu Cai

Introduction to the Main Activities of Investor Relations

I. Introduction to the Company's Engineering Business and Business Model

The company was established through the restructuring of a state-owned central enterprise design institute into an engineering firm. We primarily serve clients in the chemical and petrochemical industries, while actively transforming and expanding into the new energy market. Our business excels in environmental protection, and for many years, we have been dedicated to providing customers with comprehensive, one-stop engineering services spanning the entire lifecycle—including engineering consulting, engineering design, EPC (engineering, procurement, and construction), project start-up, and post-commissioning maintenance. Today, we are the leading domestic company designing and undertaking the largest number of sulfur recovery units through EPC contracts.

The company itself typically does not engage in the production of equipment and materials or construction and installation services. Instead, during its daily business operations, it outsources the equipment, materials, and construction/installation tasks required for engineering general contracting projects to qualified manufacturing and construction subcontractors—companies with appropriate qualifications and proven capabilities in manufacturing and project execution—through a competitive bidding process tailored to the specific needs of each project.

II. What are the company's main products in the chemical business? And what effective measures have been taken to address the industry's cyclical fluctuations?

The company is currently the largest n-propanol producer in China, a leading domestic enterprise specializing in butanol and octanol residue recovery, and a prominent n-pentanol sales company. It primarily focuses on the research and development of various advanced chemical materials, as well as certain other areas. C3、C4、C5、C8 Production and sales of alcohols (including aldehydes and acids), as well as products such as n-propyl acetate, butyl acetate cellulose, and their derivatives. The company's products are widely used across multiple industries and fields, including pharmaceuticals, agrochemicals, dyes, pigments, coatings, chemicals for information technology, chemical reagents and high-purity substances, food additives, feed additives, catalysts, adhesives, auxiliaries, surfactants, fragrances, and more.

Compared to large, integrated enterprises in the industry, the company enjoys greater flexibility in production and operations due to the absence of specific constraints at the raw-material end. This allows the company to closely monitor product marginal benefits and swiftly shift toward producing high-margin products by adjusting its raw-material strategies—based on short-term and long-term market demands, trends in raw-material prices, evolving product pricing, inventory levels, and other factors—thereby ensuring robust economic performance.

3. What are the company's major ongoing engineering projects that are currently unfinished?

The company's engineering business currently has an unfinished project with Northern HuaJin United Petrochemical Co., Ltd. “ Turnkey EPC Contract for Sulfur Recovery Unit, Acidic Water Stripping Unit, and Solvent Regeneration Unit in the Fine Chemicals and Raw Materials Engineering Project EPC ） ” Sinopec (Tianjin) Petrochemical Co., Ltd. “ Tianjin Branch ‘ Oil Conversion ’ Newly Built Technical Renovation Project 15 Ten thousand tons / Annual Sulfur Recovery Unit and Supporting Project Engineering, Procurement, and Construction Turnkey Contract EPC ） ” Qilu Branch Refinery Oil Tank Area Safety Hazard Remediation Project EPC Qingdao Refining & Chemical Company's Liquefied Gas Safety Enhancement (Maleic Anhydride) Project, Section 2 EPC , Ningxia Baofeng Energy Group Co., Ltd. Second Set 50 Ten thousand tons / A large portfolio of EPC or design projects—including the process package and design for the sulfur recovery unit supporting the annual coal-to-olefins project's methanol facility, as well as the sulfur recovery unit design for Shenhua Yulin Circular Economy Coal Comprehensive Utilization Project—along with long-term service framework agreements covering unit overhauls, maintenance, technical upgrades, and improvement initiatives, ensures a robust order backlog. For detailed information, please refer to the company’s announcement. 2025 Year 1 Month 23 Today in the *China Securities Journal*, the *Securities Times*, and on Juchao Information Network ( http://www.cninfo.com.cn ）disclosed in the 2024 Brief Report on the Performance of Civil Engineering and Construction Business in the Fourth Quarter of the Year.

IV. Project Status of the Coal Chemical Industry Projects Undertaken by the Company

The company’s engineering business, leveraging its technological strengths, has successively undertaken the basic design and technical service project for the sulfur recovery unit in Shenhua Yulin Circular Economy Coal Comprehensive Utilization Project, as well as the second set of projects for Ningxia Baofeng Energy Group Co., Ltd. 50 Ten thousand tons / Including the process package and design project for the methanol-to-olefins project's supporting sulfur recovery unit, as well as the patent technology licensing and technical service project for the sulfur recovery unit at Shaanxi Coal Group Yulin Chemical Co., Ltd. Recently, the company successfully won the bid for the Jun Dong project of the National Energy Group. 20 Billion cubic meters / Partial equipment design and procurement services for the coal-to-natural-gas project, technology licensing and design services for the sulfur recovery unit in the Hami Energy Integration Innovation Base Project (Phase I Coal-to-Oil Engineering) of Xinjiang Hami Energy & Chemical Co., Ltd. under the China National Energy Group, as well as the sulfur recovery unit for the Shenhua Baotou Coal-to-Olefins Upgrade Demonstration Project at Guoneng Baotou Coal Chemical Co., Ltd. EPC General Contracting, Jun Dong Wucainwan, Xinjiang Shanneng Chemical Co., Ltd. 80 Ten thousand tons / Work related to several new coal-to-olefins projects, including the sourcing of sulfur recovery technology and provision of process package technical services. Meanwhile, the company has assigned dedicated personnel to closely monitor and coordinate with the progress of these coal chemical projects, leveraging its own technological and engineering strengths to actively support the growth of the coal-to-chemicals industry.

5. What are the company's main clients in its engineering business?

The company's primary customer base includes China Petrochemical Corporation, China National Petroleum Corporation, China Energy Investment Corporation, Datang Group, Sinochem Holdings, CNOOC Group, China Coal Group, China General Nuclear Power Group, China North Industries Group Corporation, Shaanxi Yanchang Petroleum, Wanhua Chemical Group, Hengli Petrochemical, Shenghong Petrochemical, Yulong Petrochemical, as well as numerous other local refining and chemical enterprises that boast strong financial capabilities and solid creditworthiness.

6. What are the company's incremental projects in the chemical business?

Currently, the company is fully pushing ahead. “ Butyric Acid Cellulose Acetate Product Optimization and Upgrade Technical Transformation Project ” Strive for high-quality construction progress. “ Isooctanoic acid ” New production capacity ( 50000 Ton / year) to be completed and put into operation as soon as possible; the company “ Cellulose Derivative and Its Supporting Equipment Upgrade Project ” Currently, technical feasibility studies and design optimizations are underway, with efforts focused on completing construction as planned. Additionally, the company has integrated R&D resources from universities, research institutes, and enterprises to drive innovation in developing new downstream products centered around aldehydes, alcohols, acids, and esters. This collaboration is now expanding into cutting-edge areas such as new energy, fine chemicals, and advanced materials through joint technology development initiatives.

List of Attachments (if any)

None

Date

2025 Year 2 Month 17 Day -18 Day