SMM gold wire production begins with mining at our Hishikari Mine (in Kagoshima prefecture).
Also, using high-purity gold refined in the Toyo Smelter & Refinery (in Ehime prefecture), where an environmentally-clean and highly-efficient flash furnace method has been adopted, the gold wire is mass-produced in four sites globally.
China (Sumitomo Metal Mining Electronics Materials (Shanghai) Co., Ltd.)
Through this"Bonding Wire Manufacturing Network", SMM gold wires continue to evolve in order to accommodate a wide range of customer needs globally, such as making IC packages with a greater number of pins and with finer pitch, etc.
Malaysian Electronics Materials DN.BHD.)
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