Shenzhen Hongyi Electronics Co. , Ltd   Daqing Linqiang Petroleum&additive Co.,Ltd   LIANYUNGANG ZHONGYI INTERNATIONAL TRADE CO.,LTD.   Guangzhou Zhongyi Trading Co.,Ltd.   Qingdao Zhongyitong Chemical Co., Ltd   Qingdao Zhongyitong Chemical Co., Ltd   Daqing Dongyi Chemcal Ltd.,Co.   Qingdao zhongyitong chemical co.,ltd   Tianjn Liangzhongyike chemical co.,ltd   yichang zhongyitai trading Co., Ltd.   Lianzhongyike Chemical Co.,LTD   Zhejiang Chongyi Med.& Chem.Co.,Ltd.   Zhejiang Zhongyi Pharmaceutical Co., Ltd.   Tianjin Lianzhongyike Chemicals Co.,Ltd   xinchang xinzhongyi pharmaceutical   Shanghai Zhongyitai International Trading Co.Ltd.   Rudong zhongyi chemical co., ltd.,   Ningbo Dahongying Bio-Engineering Co.,ltd   LIANYUNGANG ZHONGYI INTERNATIONAL CO.,LTD   Lianyungang zhongyi Trade InternationalCompany