GB/T 1842 塑料 聚乙烯环境应力开裂试验方法
nvironmental stress cracking-Measurement of the melt flow index-Carbon black and/or mineral filler content measurement in polyethylene by direct combustion-Measurement of carbon black content by thermo gravimetric analysis(TGA)-Assessment of carbon black dispersion in polyethylene using a microscope
ISO 8442-1与食品接触的材料和制品 刀具和凹形餐具 第1部分:准备食物用刀具的要求/Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 1: Requirements for cutlery for the
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