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Henan Frontsteel Silicon Industry Co., Ltd.
Henan Yuheng New Refractory Material Co., Ltd.
Wuxi J&R Roll Former Co., Ltd
Shandong Hefa Steel Co., Ltd
Tianjin Xinqian Precision Machinery Technology Co., Ltd
Hongkong Jingyuan Metal & Plastic Products Co., Ltd
Tangshan Xingji International Trade Co.,Ltd
DSL Fusion Technology Co., Ltd
Hangzhou Fuyang Hengshan Composite Material Co., Ltd.
Zhejiang Jinhang Steel Tube Technology Co.,Ltd
Shenzhen Topmag Technology Co., Ltd.
Zibo Modern Steel Co.,Ltd