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  • Invention patent certificate (a selective low power laser sintering nylon powder and its preparation method)
  • Patent certificate of invention (a POM masterbatch and its preparation method)
  • Invention patent certificate (a low precipitation transparent TPE elastomer and its preparation method)
  • Invention patent certificate (a White Masterbatch for high impact polystyrene and its preparation method)
  • Patent certificate of invention (a superfine talcum powder polypropylene filled masterbatch and its preparation method)
  • Invention patent certificate (a general high gloss black parent)
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