Yu Long Coal Chemical Industry and Hebi Coal Chemical Industry in Henan Coal Industry
He' nan Zheng Tong chemical co., ltd
He' nan wuzhi Su Guang chemical co., ltd
Henan jiujiu chemical co., ltd.
He' nan Hengtong chemical industry group
Henan Qing 'an Chemical High-tech Co., Ltd.
Henan daochun chemical technology co., ltd.
Henan Clive Chemical Co., Ltd.