Since 1960: Six Star Gears Co., Ltd. Since 1975: Six Star Machinery Industry Co., Ltd. Since 1984: Yieh Chen Machinery Co., Ltd. (Machinery Department) Since 1988: Allstar Precision Machinery Co., Ltd. Since 1889: Summoon Co., Ltd. (Thailand Branch) Since 1989: Six Star Group Founded Since 1991: Six Star Ind. (U.S.A. Michigan Branch) Since 1992: Rollform Tools Co., Ltd. (U.K. Branch) Since 1996: Chin-Fa Automatic Machinery Co., ltd. (China Branch)
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