Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)

hj 398

hj 398, Total:7 items.

The international standard classification for "hj 398" includes: Stationary source emissions .

The Chinese standard classification for "hj 398" includes: Analysis methods for exhaust emission pollutants .


Professional Standard - Environmental Protection

  • HJ/T 398-2007 Stationary source emission-Determination of blackness of smoke plumes-Ringelmann smoke chart

未注明发布机构

Institute of Electrical and Electronics Engineers (IEEE)

  • SMPTE ST 398:2004 ST 398:2004 - SMPTE Standard - For Digital Video Recording — 1/2-in Type D-14 Component Format — 525/60 and 625/50
  • ST 398:2004 ST 398:2004 - SMPTE Standard - For Digital Video Recording — 1/2-in Type D-14 Component Format — 525/60 and 625/50

IX-EU/EC

  • TEST/89/398-1989 List of Competent Authorities of the Member States Within the Meaning of Article 9 of Council Directive 89/398/EEC on the Approximation of the Laws of the Member States Relating to Foodstuffs Intended for Foods for Particular Nutritional Uses (for Related