Yancheng hengkun chemicais Co Ltd   Yancheng Hengkun Chemical Co.,Ltd   Yancheng Limin Chemical Co.,Ltd   Yancheng Fushengyuan International Trading Co.,Ltd   Yancheng Fu Shi Environmental Technology Co., Ltd.   Yancheng suhai pharmaceutical co.,ltd.   Yancheng Gexing Trading Co., Ltd.   Shaanxi Zhengsheng Kangyuan Bio-medical Co., Ltd   Nantong Hengsheng Fine Chemical Co.,Ltd   YANCHENG M.K.L.PIGMENT CHEMICAL CO., LTD.   Qingdao Hengshengtai Chemicals Co., Ltd.   HANGZHOU XIASA HENGSHENG CHEMICAL CO.,LTD.   Yancheng orgunion   Yancheng Confident Biochemical Technology   Yancheng Nongbo Bio-technology Co.Ltd   Yancheng Rongchang Chemicals Co.,LTD   YanCheng LongShen Chemical Co.,Ltd.   Yancheng City Huaou Industry Co., Ltd.（derui）   Yancheng Huaye Pharmaceutical & Chemical Co.,Ltd.   Yancheng Dongda Chemical Co., Ltd.