The Sigma Group – Global Innovator in the Secondary Aluminum Industry 🔥 Strategic Layout • Global Vision The Sigma Group, founded in 1978, primarily focuses on secondary aluminum smelting, zinc alloy smelting, and metal scrap trading. The Sigma Group plays a vital role in the global aluminum recycling ecosystem, processing scrap metal from sources such as end-of-life vehicles to produce hundreds of different specifications of aluminum alloys through leading edge smelting processes. The finished products are sold to manufacturers of automotive and motorcycle parts, home appliances, and other industrial and commercial products. With over 48 years of experience and development, Sigma now spans across three countries: 9 Smelting Plants:Taiwan (Kaohsiung), and China (Zhejiang, Chongqing Yongchuan, Chongqing Qijiang, Rizhao, Chengdu, Baotou, Binzhou, and Gongyi). Global Trade Network:Trading offices in USA (New York) and Japan (Tokyo) service the international markets while trading offices in China (Dongguan, Zhangzhou, and Changchun) develop specific domestic regions. 🔥 Data Leadership • Industry Benchmark Over 1.2 Million Tons Annual Capacity: A cutting-edge manufacturing system capable of producing over 1 million tons of secondary aluminum per year, offering hundreds of specifications of aluminum alloys, precisely engineered to meet the diverse demands of customer die-casting and casting requirements. With the ability for molten aluminum delivery exceeding 60% of total capacity, customers within a 200 kilometer radius are ensured with fast and seamless service, realizing just-in-time lean production. 3 New Product Lines 3104 Can Stock： Produced in the Chongqing Yongchuan, Gongyi, Binzhou, and Rizhao plants, the product enables closed-loop recycling while preserving material grade. Its composition, performance, and purity fully comply with food-grade standards, supporting high-value circular utilization Aluminum Slabs： Produced at the Chongqing Yongchuan plant, with operations commencing in November 2025, 3104 alloy (beer and beverage can bodies) and 5182 alloy (can lids, pull tabs, and automotive sheet) slabs will serve as key base materials for high-end aluminum sheet production. A356.2 Alloy： Produced at the Chongqing Qijiang plant, this alloy combines lightweight properties, high strength, excellent castability, and corrosion resistance, serving as a key material for the automotive, aerospace, machinery, and electronics industries. Over 8 Billion RMB Annual Turnover： Sigma employs over 1300 employees and has an annual turnover of over 8 billion RMB, catering to global automotive, new energy, and high-end manufacturing industries, providing a low-carbon aluminum solution for prestigious global brands. Over 150 Patented Technologies： Sigma’s production processes are industry-leading, including 7 invention patents for technologies involving scrap aluminum sorting, recycled aluminum smelting, and aluminum dross recycling, Sigma is making significant strides toward achieving the goal of zero waste. 🔥 Technical Standards • Global Certification LME Registered Brands： Sigma owns three LME-registered brands of aluminum alloy ingots: "SBI" for Kaohsiung, "SIGMA" for Shanghai, and "ZSM" for Zhangzhou. Certifications and Honors： Certified under ISO 9001, 14001, 45001, 50001, 14021, and IATF 16949 international management systems. Recognized as one of China’s first batch to receive "Model Enterprise for the Circular Economy" from China's National Development and Reform Commission and among the first to be approved by China’s Ministry of Industry and Information Technology for "Regulations on the Processing and Utilization of Scrap Copper and Aluminum". The company has also been awarded numerous honors including "Green Factory," "High-Tech Enterprise," "Specialized and Innovative Enterprise," and "Healthy Enterprise.” 🌿 Industrial Ecology • Green Smart Manufacturing Sigma Aluminum Auto Parts Industrial Park Billion Dollar Nexus：A 300,000 ton secondary aluminum production capacity is already in operation. Plans are underway to introduce 20 aluminum alloy die-casting and machining companies to the manufacturing hub, synergistically and collectively creating over 10 billion RMB worth of aluminum auto parts annually. Streamlined Production System：The direct supply of molten aluminum for die-casting will allow businesses to greatly reduce costs and increase efficiency. Government Partnership：The Yongchuan District government is responsible for policy support and creating a favorable business environment, while Sigma is responsible for park construction, investment attraction, and operation. The completed factories are available for rent or purchase, with Sigma ensuring all necessary conditions are met for incoming businesses, offering a seamless and hassle-free integration experience! Environmental Technology Breakthrough From 2017 to present, Sigma has established 3 Environmental Technology companies in Chongqing, Baotou, and Gongyi; their goal to study and produce high value-added environmentally friendly products from aluminum dross, and thus far has already successfully created new daily use materials. Raw Material Supply Stability and Import Pre-Treatment Innovation To ensure a stable and reliable supply of raw materials, and with strong support from the Yongchuan District Government, the Sigma Group has been actively advancing policies related to the import of recycled aluminum. As a key material for new energy vehicle components, recycled aluminum plays a vital role in the development of Chongqing’s industrial ecosystem, making supply stability especially critical. In February 2026, China’s first pilot program for optimized inspection and supervision of river-sea intermodal recycled aluminum imports was successfully launched at the Chongqing Yongchuan plant. This river-sea intermodal transport model helps reduce raw material costs while strengthening the overall security of aluminum supply. To ensure imported materials meet regulatory and quality requirements, the Sigma Group has established a pre-treatment process carried out before port clearance, including unpacking, sorting, magnetic separation, paint removal, cooling, and baling, supported by proprietary, purpose-built equipment developed in-house. Using precise temperature-controlled delacquering technology, organic impurities are efficiently removed without degrading the material, improving both quality and recovery rates while ensuring non-compliant materials are eliminated at the source. Mission Statement The Sigma Group will always diligently adhere to its principles of honesty and integrity, conservation, and environmental protection so that it may achieve its goal - RECYCLING FOR A BETTER TOMORROW, continuously defining new standards for green industry and forging a better tomorrow. Sigma Aluminum Auto Parts Industrial Park Official WeChat Account：