GB/T 39542.2-2020

Abolished

Mechanical pencils for technical drawings—Part 2: Black leads—Classification and dimensions

技术制图活动铅笔 第2部分：黑铅芯 分类和尺寸

Standard Type
GBT
ICS
97.180
CCS
Y50
Status
废止
Issue Date
2020-07-21
Implementation
2020-07-21
Responsible Dept
中国轻工业联合会
Drafting Unit
N/A