Changyi Fengrun Fine Chemical Co.,Ltd.
Changyi Dongfeng Sealing Materials Co.,Ltd
Changyi Huamei Plastic Co. , Ltd
Huifengrunda Chemical Co., Ltd.
Changyi Xinxing Technology Development Co., Ltd.
Changyi Hanying Medical Science Co.,Ltd
Changyi Haosen Biotechnology Co., Ltd.
Sanming Fengrun Chemical Industry Co.,Ltd.
Tianjin ChangYiDa Chemical Co.,Ltd
Taizhou Fengrun Biochemistry Co., Ltd.
Taizhou City Fengrun Biochemical Co., Ltd.
Changyi Hanying Medical Science Co.,Ltd.