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GB/T38720-2020 6 tests of the...
Golden Wallchart
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Evaluation of the banded tissue in steel (part I) (GB/T34744.1-2017) 5 -
8 for steel insulated carbon, bead-ray and Wei Wei tissue (GB/T13299-2022) -
14 wall charts (GB/T9441-2021) -
13 wall charts of the Gray Casted Iron Gold Phase (GB/T7216-2023) -
8 wallcharts of steel microorganization rating standards -
Rating standard wall charts, gold spectrographs, low-multiplier defects 1 -
Gold wallchart steel, non-metallic netting, carving rating (Performance E45) -
In stainless steel a-phase gold-bearing measurements (gb-t13305-2008) 5
