Sinopec Ningbo Daxie Petrochemical Co., Ltd.
Ningbo lejin yongxing chemical co., ltd
Sinochem Ningbo (Group) Co., Ltd
Ningbo medicine co., ltd
Ningbo Xinqiao chemical co., ltd
Ningbo wanhua polyurethane co., ltd
Taihua Plastic (Ningbo) Co., Ltd.
Zhejiang Qiancheng Petrochemical Company Limited