GB/T 18882.3-2019
Chemical analysis methods for mixed rare earth oxide of ion-absorption rare earth ore—Part 3: Determination of silicon dioxide content
GB/T 18882.4-2024
Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore—Part 4:Determination of iron trioxide content—Inductively coupled plasma atomic emission spectrometry
20242980-T-469
Chemical analysis methods for mixed rare earth oxide of ion-absorpted type RE ore—Determination of sulfate radical content
YS/T 575.14-2020
GB/T 28882-2012
Rare earth carbonate of ion-absorpted type rare earth ore
T/HNNMIA 76-2023
20231303-T-469
Chemical analysis methods for rare earth concentrates – Part 8: Determination of rare earth oxide contents and distribution
DZ/T 0398-2022
DZ/T 0452.2-2023
T/GZHG 032-2022
20231301-T-469
Chemical analysis methods for rare earth concentrates— Part 11: Determination of fluorine content
T/HNNMIA 14-2023
XB/T 235-2020
20231551-T-469
Chemical analysis methods for rare concentrates-Part 3: Determination of calcium oxide content
20231308-T-469
Chemical analysis methods for rare earth concentrates—Part 9: Determination of phosphorus pentoxide content
ASTM B308/B308M
Standard Specification for Aluminum-Alloy 6061-T6 Standard Structural Profiles (Withdrawn 2019)
ASTM B429/B429M
Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube (Withdrawn 2019)
ASTM D2572
Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers (Withdrawn 2019)
ASTM D4674
Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments (Withdrawn 2019)
ASTM D4791
Standard Test Method for Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate (Withdrawn 2019)