Tianjin Master Co.,Ltd.   Tianjin Institudes for Drug Control   Tianjin Kelioil Engineering Material and Technology Co.,Ltd   Tianjin Baitu Chemical Co.Ltd   tianjin yeats technology&chemical co.,ltd.   Tianjin zongyan techonlogy Co,.Ltd   tianjin dongshen international trading co.,ltd   Guangzhou Qianyi Fine Chemical Co., Ltd   Shandongtianyin Biotechnology Co ltd;   Tianjin Dalipu Oil Country Tubular Goods Co., Ltd   Tianjin Botongda Energy Technology Co.,Ltd   Tianjin Chempharmatech Co.,Ltd.   Tianjin Chempharmatech Co.,Ltd.   Tianyingtai Imports & Exports Trade Co., Ltd   Humate（Tianjin）international limted   Tianjin Reliable Pharmatech Co., Ltd.   Tianjin Runsheng Cellulose Science and Technology Co., Ltd   Anhui Tianyi Environmental Protection Tech. Co.,Ltd   TIANJIN GREATTRADING CO.,LIMITED   Tianjin Zhonghui International Trading Co .,Ltd