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Pre-coated film propping agent, preparation method of pre-coated film propping agent and sand prevention method adopting pre-coated film propping agent

Pre-coated film propping agent, preparation method of pre-coated film propping agent and sand prevention method adopting pre-coated film propping agent

  • CN 102,660,245 B
  • Filed: 03/31/2012
  • Issued: 05/14/2014
  • Est. Priority Date: 03/31/2012
  • Status: Active Grant
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