CNBM Tongliao Silica Sand Industry Co., Ltd.
Beijing Weishen Technology Development Co., Ltd.
Guizhou Jiuyuan Blasting Engineering Co., Ltd.Guizhou Sheng, China
Shanghai Hygienic Supply Works Co., Ltd.Shanghai Shi, China
Hefei Zhongya Building Material Equipment Co. Ltd.Anhui Sheng, China
Handan Yutai Gas Co. Ltd.Hebei Sheng, China
Anhui Hengtai Engineering Consulting Co., Ltd.
Merrimack River Precision Industrial Corp.United States
ShenZhen Saejong Ind Co.,Ltd
Siping Fine Chemicals Co. Ltd.Jilin Sheng, China
Suzhou Pelder Tools Co., Ltd.Jiangsu Sheng, China
Jiangsu Linghan Intelligent Laser Technology Co., Ltd.Jiangsu Sheng, China