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  • ISO 9001 :2000
  • EN13445
  • ASME VIII div.1
  • ASME U/U2-Stamp
  • TEMA
  • HTRI
  • AD2000
  • PD5500
  • RTOD
  • TUV
  • HPO
  • E729
  • NORSK
  • National board R-Stamp
  • PED (H/H1)
  • SCC**(VCA**)
  • manufacturing license P.R.China