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Zhuzhou Hongtong Tungsten Carbide Co., Ltd.
Huona (Shanghai) New Material Co., Ltd.
Shandong Hongtai Science and Technology Co., Ltd.
Shanghai Tankii Alloy Material Co., Ltd.
Luoyang Dingding Tungsten and Molybdenum Materials Co., Ltd.
Jinan Xinyu Cemented Carbide Co., Ltd.
Tengzhou Uni-Tech Co., Ltd.
BAOFULL CO., LIMITED
Lanzhou Qianmiaonuo Trading Co., Ltd.
Xinle City Hongyuan Carbon Black Sales Center