Shandong Ensign Industry Co., Ltd.

Three Decades of Deep Cultivation in Biomanufacturing:Shandong Ensign Industry Co., Ltd. Leading Position in the Global Citric Acid Industry

Shandong Ensign Industry Co., Ltd., founded in 1996 and headquartered in Changle County, Weifang, Shandong Province, is a large-scale biomanufacturing enterprise focusing on the R&D, production and global sales of citric acid series products and edible alcohol, with corn starch as its core raw material. Recognized by the Ministry of Industry and Information Technology as a National Demonstration Enterprise for Individual Manufacturing Champion, Ensign Industry has grown into one of the world’s leading citric acid manufacturers with the largest production capacity and highest market share, thanks to its large-scale production capacity, cutting-edge fermentation technology and full-chain quality control system. Its products sell well in more than 130 countries and regions around the world, making it a benchmark enterprise for China’s bio-fermentation industry in the international market.

I. World-Leading Production Capacity with a Full-Category Product Matrix

After nearly 30 years of intensive development in the industry, Ensign Industry has built the world’s leading single-site citric acid production base. In 2024, the total output of citric acid and citrate products reached 1.3812 million tons. With the commissioning of the 400,000-ton high-quality citric acid green intelligent manufacturing project, its overall production capacity remains firmly in the world’s first echelon, and its international market share continues to rank among the top in the industry, accounting for about 22% of China’s total citric acid exports.

In terms of product layout, the company has formed a citric acid product matrix covering all application scenarios:

  • Basic citric acid products: Citric Acid Monohydrate and Citric Acid Anhydrous, meeting mainstream demands in food & beverage, daily chemical washing, pharmaceutical and chemical industries;
  • Deep-processed citrate products: Refined products such as Sodium Citrate and Potassium Citrate, targeting high-end segments including premium food, pharmaceutical excipients and industrial water treatment;
  • Supporting co-products: Premium edible alcohol, high-grade alcohol, as well as circular economy derivatives such as DDGS high-protein feed and food-grade carbon dioxide, realizing full-value utilization of raw materials.

Benefiting from the superior port location of Shandong Peninsula, the company is adjacent to core foreign trade ports such as Qingdao Port and Yantai Port, with direct access to the Jiaoji Railway and expressway network. It has built an efficient global logistics and distribution system, covering core consumer markets in Europe, North America, Latin America, Southeast Asia and the Middle East, and has established long-term and stable supply chain partnerships with world-renowned enterprises including Coca-Cola, PepsiCo and Unilever.

II. Technological Innovation Builds Core Barriers and Leads Industry Process Upgrading

Ensign Industry takes technological R&D as the core driving force of enterprise development, and has built top-tier scientific and innovation platforms in the industry: it has the first Academician Workstation in the citric acid industry, a Postdoctoral Research Workstation, a provincial enterprise technology center, and the China Light Industry Engineering Technology Research Center for Deep Processing of Citric Acid (Salts) and Comprehensive Utilization of By-products. It initiated the establishment of the Natio

In terms of core production processes, the company has carried out in-depth industry-university-research cooperation with universities such as East China University of Science and Technology, and made breakthroughs in a number of bottleneck technologies in the industry: the self-developed high-acid-yield Aspergillus niger strain combined with the deep submerged continuous fermentation process has raised the fermentation acid yield to over 190g/L, reaching the world’s highest level. Supported by a multi-enzyme synergistic catalytic system and efficient extraction technology, the raw material utilization rate is close to 100%, and the comprehensive energy consumption per unit product is 18% lower than the industry average, forming a cost advantage of 300-400 yuan per ton of product. In 2025, the project Innovation and Industrialization of Multi-enzyme Synergistic Catalytic System and Green Manufacturing Technology for Bio-based Products, jointly tackled by the two parties, won the Grand Prize for Scientific and Technological Progress from the China Petroleum and Chemical Industry Federation. This marks the first time that the domestic organic acid industry has received this honor, and signifies that the company’s biomanufacturing technology has reached the world’s leading level.

III. Full-Process Quality Control System Aligns with Global Compliance Standards

As a supplier of food additives and pharmaceutical raw materials, Ensign Industry has established a full-chain quality control system covering raw material procurement, manufacturing, finished product testing and logistics delivery. The company’s testing center has passed CNAS accreditation, and is equipped with more than 100 sets of high-end testing equipment such as high performance liquid chromatography, gas chromatography and atomic absorption spectrometry, realizing full-process quality traceability from corn raw materials to finished products, and ensuring stable and controllable product quality.

In terms of international compliance certifications, the company has passed ISO9001 quality management, ISO14001 environmental management, ISO22000 food safety management, FSSC22000, BRCGS Global Food Safety Standard, GMP pharmaceutical Good Manufacturing Practice and other system certifications at one stroke. It has also obtained multiple international special certifications including Kosher, Halal, FAMI-QS feed additive and Non-GMO IP certifications, meeting the access requirements of major global markets such as the European Union, the United States, Japan and South Korea. It is one of the domestic citric acid manufacturers with the most complete certification qualifications. With stable quality and brand reputation, both "Ensign Citric Acid" and "Ensign Sodium Citrate" have been selected into the list of "Shandong Good Products", becoming iconic brands of China’s bio-fermentation products.

IV. Circular Economy for Green Development, Building an Industry Zero-Carbon Benchmark

Facing the global low-carbon transition trend, Ensign Industry takes "clean production and green low-carbon" as its core concept, and has built a complete circular economy industrial chain for biomanufacturing. It has been awarded the titles of National Green Factory and Weifang "zero-waste factory" demonstration enterprise.

Regarding the by-products in the citric acid production process, the company has realized full-category resource utilization:

  • It recycles high-purity carbon dioxide generated by fermentation, and has built a 100,000-ton/year food-grade liquid carbon dioxide production capacity to supply food processing and industrial welding fields;
  • It deep-processes corn fermentation waste liquid into DDGS high-protein feed and citric acid residue feed, with a total capacity of 600,000 tons per year, feeding back the animal husbandry industry;
  • It has independently conquered the comprehensive utilization technology of citric acid waste gypsum, purifying the gypsum waste residue from the neutralization process into building β-gypsum and dihydrate gypsum, digesting more than 1 million tons of solid waste annually. The solid waste resource utilization rate has reached the top level in the industry, realizing "turning waste into treasure" from the source.

Through a series of energy-saving transformations such as waste heat recovery, reclaimed water reuse and intelligent energy consumption control, the company’s carbon emission per unit product continues to decline. It has embarked on a sustainable development path of "bio-based raw materials - green fermentation - by-product recycling - low-carbon products", providing a replicable "Ensign model" for the green transformation of the traditional fermentation industry.

V. Intelligent Manufacturing Empowers Upgrading, Moving Toward High-Quality Industrial Development

In recent years, Ensign Industry has accelerated its digital transformation. The invested high-quality citric acid green intelligent manufacturing project has realized automatic, digital and visual control of the whole process from fermentation, extraction to refining and packaging. In 2024, the company was awarded the title of National Excellent-Grade Smart Factory, becoming a benchmark for intelligent manufacturing in the bio-fermentation industry.

Relying on the Industrial Internet platform, the company has realized real-time collection of production parameters, intelligent process optimization, predictive equipment maintenance and online quality inspection, increasing production efficiency by more than 25% and greatly improving product accuracy and batch stability. At the same time, the company deeply integrates intelligent manufacturing with supply chain management, 打通 the full-link data of orders, production, logistics and warehousing. It can quickly respond to the customized needs of global customers, and the delivery cycle is 30% shorter than the industry average, further consolidating the service advantage of the global supply chain.

As a leading enterprise in China’s biomanufacturing industry, Ensign Industry is taking technological innovation as its core, green low-carbon as its background, and global layout as its direction. It will continue to deepen its main citric acid business, while extending to high-end tracks such as bio-based new materials and functional fermentation products. It will promote China’s bio-fermentation industry to upgrade from "scale leadership" to "technology leadership and brand guidance", and continuously consolidate its position as an industry flagship in the wave of the global bio-economy.

CONTACT INFORMATION

Website:https://www.ensign-citric-acid.com

Phone:+8615380400285

Email:sales2@liwei-chem.com