WILLY SCHANK E.K. Idar-Oberstein Germany
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Marutomi Inc. Sabae-City Fukui Japan
ZAM GEMS JAPAN LTD. Tokyo Japan
KOMATSU DIAMOND INDUSTRY Yamanashi Japan
HATAKEYAMA INTERNATIONAL CO., LTD. Tokyo Japan
UNITED PEARL Hyogo Japan
MARUZEN CO., LTD. Osaka Japan
SARASAUGE Kyoto Japan