·QINGDAO TOPSEN IMP&EXP CO.,LTD
·haina industry co.,ltd
·JinDing Reinforcing Steel Bar Manufacture Co.
·Zhengzhou Friend Biological Engineering Co.,Ltd
·Diguo Biotechnology Co., Ltd.
·hangzhou Redsun Biological Engineering Co. Ltd.
·Shandong Fuyang Biotechnology Co.,Ltd
·RFS Fiberglass Tape Co.
·YANTAI RUNHENG FOOD CO.,LTD