GB/T 39856-2021.Hot rolled titanium and titanium alloy seamless tubes. 1范围 GB/T 39856规定了热轧钛及钛合金无缝管材的...

GB/T 39165-2020.Test method of peel and chisel for resistance spot and projection welds. 1范围 GB/T 39...

GB/T 14352.21-2021.Methods for chemical analysis of tungsten ores and molybdenum ores-Part 21 : Dete...

GB/T 39644-2021.Plain bearings-Technical specifications for Tin-based alloy plain bearings of rotati...

GB/T 14352.22-2021.Methods for chemical analysis of tungsten ores and molybdenum ores-Part 22: Deter...

GB/T 39873-2021.Determination of quaternary ammonium salt in disinfectant-Liquid chromatography-tand...

GB/T 39869-2021.Brand evaluation-Tourist destination. 1范围 GB/T 39869规定了旅游目的地品牌评价的术语和定义、品牌价值测算模型、品牌强度...

GB/T 20695-2021.Lambda-cyhalothrin technical material. 1范围 GB/T 20695规定了高效氯氟氰菊酯原药的技术要求、试验方法、检验规则、验收和...

GB/T 12626.7-2015.Hard fibreboard-Part 7 : General purpose boards for use in exterior conditions. 1范...

GB/T 39141.2-2020.Mineral and sapphire watch-glasses-Part 2:Assembly to the case by adhesive or usin...