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Luoyang Tongchang Tungsten & Molybdenum Material Co., Ltd.
Xiamen Ditai Chemicals Co., Ltd.
Zhengzhou Shibo Nonferrous Metals Products Co., Ltd.
Shanghai Nansen Industry Co., Ltd.
Jiangyin Entret Coating Technology Co., Ltd.
Shanghai Tankii Alloy Material Co., Ltd.
Shanghai Bozhong Metal Group Co., Ltd.
Zhuzhou M & J Import and Export Co., Ltd.
China Iron and Steel Research Institute Group