Dongguan Zhengxin Laser Techology Co.,Ltd   Chengxin Chemicals Company   Qingzhou Shengxin Chemical Co., LTD   TangShan HengXinDa Group Co.,Ltd   Hubei Zhengxing Gongchuang technology co., LTD   Hubei Zhengxing phar technology co., LTD   Hangzhou Hengxing Activated Carbon Co.ltd   Henan HengXin Industrial&Mineral products Co.,Ltd   Zhengzhou Jingjiang Chemicals Co.,Ltd   Jingjiang Dong Ni Chemical industry co., LTD.   Linyi Shengxin Pharmaceutical R&D Co., Ltd   Tianjin shengxinhai chemical co., ltd   Tianjin Dingshengxin chemical industrial Co.,Ltd   Xi'an Shengxing Bio-Tech Co.,Ltd   Tianjin Dingshengxin Chemical Industry Co., Ltd.   Qingdao Chengxinhong Trading Co., Ltd   Qingdao Shengxin Chemical Co., Ltd.   Jingjiang East Chemical Co., Ltd   Jingjiang Sanyi Chemical Co.,Ltd.   Jingjiang Hongtai Chemical Engineering Co., Ltd