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���50m*0.32mm*1.0um
*��ʹ���¶ȣ�300��C
��ţ�20210422006
Ӧ�ã�GB 21027-2020��ѧ����Ʒ�İ�ȫͨ��Ҫ��
The scope of application of the new standard is clearer, and the provisions apply to the supplies used for learning used by students under the age of 14 (including 14 years old), which are distinguished from office stationery, and are clearly not applicable to the stationery used by students and professionals over the age of 14. , to solve the problem of blurred boundaries between office stationery and student supplies. The corresponding examples given include student compasses, manual pencil sharpeners, correction stickers, book covers, lead, ink, utility knife products, adhesives, etc., to improve the readability and comprehension of the standard.
In order to keep the product names consistent with the corresponding industry standards, the plasticine was changed to colored clay, the drawing ruler was changed to a plotter ruler, and the description was refined; the adhesive was changed to specific categories of liquid glue, solid glue, and paste. ; Modify the handmade scissors to stationery scissors; concretize the name of the writing pen and modify it to pencil, mechanical pencil, ink ballpoint pen, neutral ink, ballpoint pen; modify this book into a more targeted academic book. These revisions improve the normative nature of the standard.
Name: HH-1 capillary column
Stationary Phase: Dimethylpolysiloxane
Specifications: 50m*0.32mm*1.0um
*High operating temperature: 300��C
No.: 20210422006
Application: GB 21027-2020 "General Requirements for the Safety of Student Supplies"
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