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GB/T 19520.19-2020
电子设备机械结构 482.6 mm（19 in）系列机械结构尺寸 第3-107部分:小型化插箱和插件的尺寸
Mechanical structures for electronic equipment—Dimensions of mechanical structures of the 482.6 mm (19 in) series—Part 3-107: Dimensions of subracks and plug-in units, small form factor
GB/T 38006-2019
Textiles—Method for determination of dimensional changes of fabrics by steam ironing
GB/T 18251-2019
Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compounds
GB/T 20202-2019
Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture
GB/T 21242-2019
Fireworks—Test methods of qualitative determination of prohibitive and limitative substances
GB 17380-2020
Regulation on aids to navigation for marking of offshore structures, China