GB/T 21027 Common use of security for student's articles 学生用品通用要求

3.1 重金属元素 Toxic Elements Test

3.2 涂改制品中的苯、氯代烃 Content of Benzene and Hydrochloric Ether in Write-out  Products

3.3 胶黏剂中的有害物质 Hazard Products in adhensive

苯、甲苯、二甲苯

总挥发性有机物

3.4 甲醛含量 Formaldehyde Content

游离甲醛（胶粘剂）

3.5 偶氮染料 Azo-Dye

3.6 本册亮度（白度）Brightness of Paper(whiteness)

3. 7 笔帽安全 Specification for Safety Caps

3.8 边缘、尖端  Sharp Edges and Sharp  Points

标识标志

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