The Sigma Group, founded in 1978, primarily focuses on secondary aluminum smelting and metal scrap trading.Sigma has sizeable plants in Taiwan (Kaohsiung) and China (Shanghai, Zhangzhou, Chongqing, Rizhao, Chengdu, and Changchun), with over 1600 employees and annual turnover of 8.2 billion RMB. 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 Brothers, Inc., was founded in 1981 in Kaohsiung, and is presently the headquarters of our metals operation. Throughout the years, smelting of secondary aluminum alloy ingots and non-ferrous scrap metal trading has become the main focus for the Sigma Group.

    The Sigma Group now operates eight smelting plants. The Kaohsiung aluminum alloy smelting plant was established in 1987, with monthly capacity of 6,000 mt. The Shanghai smelting plant was established in 1993, moved to a larger site in 2005, and currently operates with a monthly capacity of 25,000 mt of aluminum alloy ingots, and 3,600 mt of zinc alloy ingots. The Zhangzhou plant was established through a buyout of Tsann Kuen's smelting plant, and has a monthly capacity of 15,000 mt. The Chongqing plant has a monthly capacity of 10,000 mt, the Rizhao plant 10,000 mt, the Chengdu plant 5,000 mt, the Changchun plant 6,500mt, and the Baotou plant 10,000mt. The Zhejiang plant has a monthly capacity of 10,000 mt of aluminum alloy ingots, 3,000 mt of aluminum die-cast parts, 3,000 mt of direct molten aluminum delivery, and 1,500 mt of zinc alloy ingots. The Sigma Group currently has an annual production capacity of roughly 1,000,000 mt.

    Sigma is capable of producing hundreds of 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 ISO9001, ISO14001, OSHA18001, and TS16949 standards as the guidelines for our entire operation, and were also awarded the honorary title of "Model Enterprise for the Circular Economy" by China's National Development and Reform Commission. We are the largest secondary aluminum alloy smelter in the Greater China Region, and aspire to be the largest secondary aluminum alloy smelter in the world.

     In April 2004, the Sigma Group and Daiki Aluminum Industry jointly founded Daiki-Sigma Engineering (China) Inc. Its primary purpose is to deal with the designs, production, and sales of various types of furnaces for the aluminum casting industry. Examples include melting furnaces, holding furnaces, and crucible furnaces. It also provides technical advice and support for related matters.

   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.