Hunan OUYA Biological Co.,Ltd   Shijiazhuang Youyao Copper Import& Export Co., Ltd   xuzhouyacheng chemicals copany   Juancheng Sanxing Chemical Auxiliary Agents Co., Ltd   Juancheng ouya chemical CO., Ltd   Juancheng Ouya Chemical CO., ltd..   heze juancheng ouya chemical co.,LTD   Shandong Ouya Chemical Co.,Ltd   NANJING OUYALONG INDUSTRIAL CO.,LTD   Juancheng Ouya Chemical Co.,Ltd   Shijiazhuang Youyao    OUYA biological company   hebei Youyao Copper Import & Export Co., Ltd    Hunan Ouya Biological Co., Ltd.   SHJIAZHUANG YOUYAO COPPER IMPORT&EXPORT CO.,LTD    Nan Jing Ouyalong industry limited    Shijiazhuang Youyao Copper Co., Ltd   Juancheng Ouya Chemical Co., Ltd.    Shijiazhuang Youyao Copper    Shijiazhuang Youyao Copper Import&export Co.,Ltd