1. The original aspiration remains unchanged

In April 2022, Li Zhenglai Technology (Chongqing) Co., Ltd. was officially established. After three years of development, the company has gradually grown from an initial team of three people to gather 25 professionals who are passionate about the sulfuric acid industry. With our rigorous professional spirit and unremitting pursuit of innovation, we have won the recognition and high praise of a wide range of customers. Looking ahead, the digital transformation of the sulfuric acid industry is an inevitable trend. Our common goal is to comprehensively upgrade the sulfuric acid plant from intelligence to digitalization, fully unleash the value of data, help customers optimize their sulfuric acid business, and jointly create a brilliant future. Out of deep passion for the sulfuric acid industry, we have always been committed to applying reliable measurement technologies to promote the intelligent production process of the sulfuric acid industry. Our goal is to help our clients steadily embark on a sustainable and profitable path in the rapidly changing digital economy era.

2. Continuous innovation

Over the past three years, the company has invested a total of 2.42 million yuan in research and development, accounting for 9.5% of its sales revenue. The company has one doctor and ten full-time R&D personnel, with the proportion of R&D personnel reaching 44%. All R&D personnel have a bachelor's degree or above.

1. Intellectual property application: Three invention patent applications have been submitted; Seven utility model patent applications have been submitted, among which four have been authorized. Obtained two software Copyrights. In addition, five academic papers have been published.

2. Product Innovation: We have launched six pioneering products, including portable acid concentration analyzers, high-temperature acid concentration analyzers, automatic condensing acid dissolvers, water vapor leak detectors, closed flue gas samplers, and acid mist extractors. These products have successfully solved the long-standing problems in the industry and helped customers achieve the green transformation of sulfuric acid production.

Portable acid concentration analyzer

High-temperature acid concentration analyzer

Automatic condensate acid Discharger

Water vapor leak detector

Acid mist suction device

Flue gas closed sampler

3. Upgrade and Iteration: We have been continuously committed to the product innovation of high-efficiency sulfur guns. Through in-depth theoretical research, optimization of manufacturing technology, and a meticulous attitude, we have completed the iteration and upgrade of three generations of high-efficiency sulfur guns, successfully solving the three major problems of sulfur guns: jacket leakage, gun body bending, and nozzle blockage. Through these improvements, we effectively solved the problem of unplanned shutdown of the device caused by the quality issue of the sulfur gun. In the future, we will continue to promote the innovation of high-efficiency sulfur guns to meet the growing demand for intelligent sulfuric acid plants.

CQC9001

Test device

High-efficiency sulfur gun

4. Digital Sulfuric Acid APP: As the sulfuric acid industry comprehensively promotes digital transformation, the future development trend of the sulfuric acid industry is bound to shift from the current automation to digitalization, thereby triggering a major transformation in the industry. The biggest change among them lies in that production experience will be transformed from tacit knowledge to explicit customer standard intellectual property rights. Based on this future demand, Li Zhenglai Company officially launched the research and development of the Digital Sulfuric Acid APP at the end of 2023 and officially launched it on the mobile application store in January 2025. After nearly two years of research and development, the core function of Digital sulfuric Acid - the material balance module - will be officially launched during the Chongqing Sulfuric Acid Annual Conference in May 2025. Please stay tuned and download it for use.

5. Digital Sulfuric Acid DCS System: Driven by the wave of digital transformation, the entire industry is actively exploring the automated operation and one-click start solutions for sulfuric acid plants. Lizhenglai Company keeps pace with The Times. Relying on the material balance theory and sulfuric acid production experience accumulated by the Digital Sulfuric Acid APP, and combining with professional knowledge of automation, it successfully developed a digital sulfuric acid DCS control system integrating one-click start, automatic operation and safety check functions in March 2025.

3. Serve enterprises over three years

1、Over the past three years, we have provided products and technical services for 65 sulfuric acid plants in the global sulfuric acid industry, with a total production capacity of 33.6 million tons. Our products have been exported to Africa, Europe and Southeast Asia.

2、Over the past three years, we have provided complete sulfur guns for a single sulfur-making acid production plant with a capacity of 1 million tons, and complete high-efficiency sulfur guns for 12 sulfur-making acid production plants with a capacity of 800,000 tons. A total of 186 high-efficiency sulfur guns have been sold over the three years.

3、Over the past three years, we have provided 102 sets of automatic condensing acid dissolvers and water vapor leak detectors for the newly-built sulfuric acid plant, helping the sulfuric acid industry reduce the emission of approximately 270,000 cubic meters of high-concentration acidic gases and effectively protecting the environment from pollution.

4、Over the past three years, we have provided 22 closed flue gas samplers for the sulfuric acid plant, helping the sulfuric acid industry reduce the emission of approximately 100,000 cubic meters of high-concentration acidic gases and effectively protecting the environment from pollution.

5、Over the past three years, we have provided 103 sets of high-temperature acid concentration analyzers for the industry, helping customers achieve stable measurement of high-temperature acid concentration and effectively avoiding major safety hazards of waste heat recovery devices.

4. Thank you for being there

The stable development of Li Zhenglai for three years in the current severe market environment would not have been possible without your trust and support. During the process of developing new products, due to our lack of experience, some products have had some deficiencies in performance. However, it is precisely your unreserved sharing of valuable experience that has helped us continuously improve the performance of our products, enabling us to successfully launch outstanding products such as the third-generation high-efficiency sulfur gun, the third-generation high-temperature acid concentration analyzer, the third-generation automatic condensate acid emitter, and the second-generation acid mist suction device. The achievement of these results would not have been possible without your care and support for this start-up enterprise. Here, on behalf of the company, I would like to express my sincere gratitude to you. We will continue to launch more high-quality, diverse and practical innovative products to repay your trust, support and love for us!