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Shanghai Tenger Machinery Co., Ltd.
Beijing Synergy Technology Co., Ltd.
Shenzhen Zhonglian High-Tech Security Technology Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Jiangsu East China Nonferrous Geological Materials Supply and Marketing Company Limited
Ningbo Hantian Electronics Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.