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  Shandong Wantong Petrochemical Group Co., Ltd.
 
  Address: Shandong Province, Lushan Road, Dongying District No. 1036
 
  Postal Code: 257066
 
  Tel: 0546-8166666
 
  Fax: 0546-8288666
 
  E-mail: wantong_666@163.com
 
  Website: www.wantonggroup.com