GB/T 37042-2018
Hexamethylene diisocyanate
GB/T 25254-2022
Poly-(tetra methylene ether glycol)(PTMEG) for industrial use
HG/T 3777-2023
SH 2604.02-2003
Water treatment chemicals-solidum(ethylenedinitrilo)-tetramethylenephosphate
HG/T 4330-2012
Water treatment chemical-Sodium salt of diethylene triamine penta(methylene phosphonic acid)
HG/T 3777-2005
Water treatment chemicals-Diethlenetriamine penamethylene phosphonic acid
DB43/T 2200-2021
GB/T 39882-2021
Examination methods for methylene dioxymetham phetamine in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
HG/T 3538-2011
HG/T 5868-2021
Technical specification for green-design product assessment-Polytetrarmethylene ether glycol
HG/T 4329-2012
Water treatment chemical-Ethylene diamine tetra (methylene phosphonic) penta sodium salt
GB/T 25254-2010
Poly-(tetra methylene ether glycol) (PTMEG) for industrial
GB/T 2441.9-2010
Determination of urea - Part 9: Methylenediurea content - Spectrophotometric method
T/CDZX 004-2023
HG/T 5687\uff5e5688-2020
HG/T 5620\uff5e5623-2019
HG/T 5867\uff5e5868-2021
HG/T 5713\uff5e5716-2020
GB/T 29669-2013
Determination of 10 volatile nitrosamines including N-Nitrosodimethylamine in cosmetics - Gas chromatography tandem mass spectrometry
GA/T 1643-2019
Forensic sciences—Examination methods for methylene dioxyamphetamine in suspected drugs—LC and LC-MS