GAOYI ZHENGTONG AUXILIARY FACTORY   Taian Healthh Chemical Co.,Ltd   Taian Ruijia Xu Chemical Industry Tech Co. Ltd.   Taian JiaYe biotechnology industry Co.，Ltd   Taian maifeng new materials technology Co., Ltd.   Taian Zhishang Industry Co.,Ltd.   Taian Jingwei Geosynthetics Co.,Ltd   QINGDAO ANXINHENGTONG IMPORT AND EXPORT CO., LTD   Tianjin century hengtong import&export co., Ltd   Taian Sanyou Chemicals Co.,LTD   taian jinye fertilizer co. ltd   Taian Li Feng Chemical Equipment Co., LTD   Hebei Hengtong Import & Export Group Limited   Hebei Hengtong Import & Export Group Limited   wuhan shengtong jinde chemical co.,ltd   TaiAn YuCheng Chemicals Import&Export CO.,LTD   Taian luchen chemcial Co.,Ltd   Shandong Hengtong Biotechnology Co., Ltd   Henan Zhengtong Chemical Co., Ltd.   huishengtongda(tianjin)INTERNATIONAL TRADING CO., LTD