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Zhengzhou Wanlong Metallurgical Materials Co. LTD (Wanlong Metallurgical) is located in Zhengzhou City, Henan Province. It mainly produces continuous casting mould protection slag, cored wire, composite alloys, nodularizer and silicon carbide.

Harbin Coredwire New Metallurgy Materials Co., Ltd (Harbin Coredwire) is a famous Chinese enterprise that mainly manufactures cored wire and cored wire machines.

Gongyi Zhongxin Calcium Industry Co., Ltd. (Gongyi Zhongxin Calcium) is located in Gongyi City, Henan Province.

Founded in 2003, situated at No.16, Donghu Street, Jizhong District, Yingbin Road, Hi-Tech Industries Development Zone, Haerbin City, Haerbin Coredwire New Metallurgy Materials Co., Ltd

Qian’an Steel Department of Shougang Group (Qian’an Steel) tried to replace CaSi cored wire with calcium wire in the past two years.

Hanzhong Zinc Special Material Industry co., LTD. （Hanzhong Zinc Special） is located in Hanzhong City, Shaanxi Province.

Hebi Huifeng Metals Process CO.,LTD (Hebi Huifeng Metals ) is located in Hebi City, Henan Province, China.

According to the investigation of www.ferro-alloys.com, calcium is usually used in the form of alloy in steel smelting.