The Sigma Group, founded in 1978, primarily focuses on secondary aluminum smelting and metal scrap trading, and is the largest secondary aluminum smelter in the Greater China Region. The Sigma Group plays a vital role in the global aluminum recycling ecosystem, processing scrap metal from sources such as shredded autos to produce specification aluminum alloys. The finished products are sold to manufacturers of auto and motorcycle parts, home appliances, and other industrial and commercial products. We have been the largest recycled aluminum producer in China since domestic operations began in 1993.

Sigma has 8 major production facilities in Taiwan (Kaohsiung) and mainland China (Shanghai, Zhangzhou, Chongqing, Rizhao, Changchun, Chengdu, and Jiashan).

We employ over 1500 employees and had an annual turnover of 8.3 billion RMB in 2014. With these 8 smelting plants, the Sigma Group has an annual production capacity of over 1,000,000 mt. Sigma is capable of producing over 80 types of alloys for the casting and die-casting industries, for delivery in ingot or liquid metal form. We own three LME-registered brands of aluminum alloy ingots: “SBI” for Kaohsiung, “SIGMA” for Shanghai, and “ZSM” for Zhangzhou. We have adopted the ISO9001, ISO14001, OSHA18001, and TS16949 standards as the guidelines for our entire operation.

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.