• Dongying Hengyu Chemical Co., Ltd.
• Jessie: 0086-18860638598 Alex:0086-13506368098 Lebby: 0086-13780798251
• China

• Dongying Hetai Chemical Co.,Ltd.
• 0546-8732880 13505468348
• China

• Dongying Heyi Chemcial Co., Ltd.
• +86-546-2068266
• China

• Dongying Hi-tech Spring Chemical Industrial Co., Ltd.
• +86-546-8182959
• China

• Dongying Huakang Chemical Co., Ltd.
• +86-546-8871097 8871028
• China

• Dongying Jinhao Chemical Co., Ltd.
• 86-546-6065868
• China

• Dongying Jinzheng Petrochemical Co., Ltd.
• 86-546-6896999 6896111 18678677352
• China

• Dongying Kangrui Pharmaceutical Co,. LTD.
• +86-546-2071819
• China

• Dongying liangxin petrochemical technology development limited Company
• 0086-546-6403568
• China

• Dongying Nuoer Chemical Co., Ltd.
• +86-13792064533
• China

• Dongying Runda Chemical Co.,Ltd.
• 86-546-3881006 3880158
• China

• Dongying Sanjin Chemical Co.,Ltd.
• +86-546-8288803,8288266
• China

• Dongying Shunli Chemical Co., Ltd.
• +86-546-5612376 7706628 13906471873
• China

• Dongying Tianpu Fine Chemical Co.,Ltd.
• 86-546-3637816 3637616 3637818
• China

• Dongying UPC Industry & Trade Co., Ltd.
• +86-546-8395218 18654609978
• China

• Dongying Wanxiang Chemical Co.,Ltd.
• 0546-7708966 13356643700
• China

• Dongying Weiyu Fine Chemical Co., Ltd.
• +86-546-3637299 3637399 13361508118
• China

• Dongying Xin Guang Chemical Co.,Ltd.(Dongying Xin Guang Petroleum Assistant Co., Ltd.)
• +86-546-8260710
  8260709
  13906470960
• China

• Dongying Xinyi Chemical light general company
• 0086-546-6882666 7728222 0086-532-86769085 86769086
• China

• Dongying Yihai Industry&Trade Co.,Ltd.
• 0546-2068905 2068392
• China