Twenty years is enough to make a seed grow into a towering tree and a stream merge into the vast ocean. From the spring breeze in 2006 to the fruitful harvest in 2026, we have left a profound mark of "helping others 

together" on the green journey of coke oven gas purification and low-carbon environmental protection with the mindset of "absorbing" the world and the persistence of "purification" technology.

Time Furnace, Refining the Way of Excellence

Twenty years is a long melting pot of time and a quality alchemy field. Shanghai Tongzhu Chemical was founded in 2006, with its headquarters located in Pudong, Shanghai. For twenty years of deep cultivation, we have 

focused on the field of chemical engineering. From being pioneers to now covering six major economic zones in China and radiating overseas, we have always been driven by technological innovation and committed to 

building a benchmark brand in the field of chemical engineering.

We have left a solid footprint in the fields of metallurgy and coking. From serving the core production lines of Baowu Group's major bases to assisting Baosteel, Shougang, and Hunan Iron and Steel Group in achieving 

green upgrades, our presence is active at every key node of the domestic steel industry. At the same time, we actively respond to the national "going global" strategy, steadily promote overseas market expansion, and 

export mature gas purification and hydrogen production technologies overseas. With stable operating equipment and excellent technical guidance, we have won the trust of overseas customers. These benchmark projects 

are not only a witness to Tongzhu's technological strength, but also a fulfillment of our commitment to "using technology to improve efficiency". We are well aware that only stable quality and reliable technology 

can forge true excellence in the furnace of time. When the hustle and bustle fades away and the noise settles, it is these seemingly dull but unwavering perseverance that have won us the trust and trust of countless 

customers, and created a long-lasting reputation monument for our enterprise.

Time hourglass, the source of accumulated wisdom

Twenty years, like a slowly flowing hourglass, have accumulated endless sources of wisdom. Core technology is the foundation of a company's success. Therefore, we not only provide full process engineering services, 

but also continue to focus on the research and production of core adsorbents and catalysts. Relying on our deep cooperation with East China University of Science and Technology, we accelerate the transformation of 

cutting-edge laboratory achievements into industrial productivity. By jointly building a joint innovation platform, breaking down the barriers between scientific research and industry, and continuously breaking 

through original technologies, we aim to build an unbreakable core competitiveness for enterprises in the field of chemical materials.

Time settles, forging cultural treasures

Twenty years of corporate culture, like a jar of aged wine, has become increasingly rich over time. Using technology to improve efficiency and providing sincere service to customers "is not only our corporate spirit, 

but also the code of conduct practiced by every helper. Our highly educated engineering and technical personnel account for over 80%. It is this high-quality team that, with solid technical abilities and rich practical 

experience, has created one industry masterpiece after another. We adhere to the concept of "technology collaboration and value symbiosis" and have established long-term cooperation with top domestic design institutes. 

At Tongzhu, details are seen as the soul, and professionalism earns trust. From the research and development in the laboratory to every bolt on the construction site, we demand high standards from ourselves. This 

rigorous pursuit of quality has deeply integrated into the cultural genes of Tongzhu

Time is a testament, engraved with responsibility and accountability

While pursuing the development of the enterprise, we have never forgotten the responsibility on our shoulders. Tongzhu Chemical always integrates the concept of green environmental protection throughout the entire 

business process. Our fully dry purification process reduces the emission of three wastes, and the coke oven gas hydrogen production technology turns waste gas into treasure, becoming a clean energy source. We demonstrate 

our responsibility and commitment to society through practical actions, contributing to improving the environment and promoting sustainable development in the industry.

Time weaves a tapestry, painting the latitude and longitude of value

Time is gilded, and the glory is renewed day by day. Standing at a new starting point of the 20th anniversary, all of us are willing to help others with our original aspirations. Looking towards the future, we will continue 

to closely monitor the forefront of the global industrial gas industry and move towards high-end and intelligent development. We will continue to deepen the integration of industry, academia, and research, overcome more key 

technologies, and contribute to the green and low-carbon transformation of the steel industry.

Salute to the twenty year journey of wind and rain, and thank you for the trust and support of partners from all walks of life. In the future journey, Shanghai Tongzhu Chemical will continue to uphold a professional, focused, 

and dedicated attitude, embrace the wave with an open mind, and break through the shackles with innovative spirit. Let's join hands and move forward, go to the mountains and seas together, and build a more brilliant tomorrow 

together!