In addition, the particle size distribution of the carbon black pigment in the ink is more uniform. And the pens filled with such gel ink behave good writing performance.
此外墨水中颜料炭黑颗粒粒度分布也较为均匀，墨水灌制成笔后划线书写线条饱满。
Note: The Application must be filled out in black or blue-black ink with neat writing.
注：本申请表应用黑色或蓝黑色钢笔、签字笔填写，字迹应清楚。
Note: The Application must be filled out in black or blue-black ink with neat writing.
注：本申请表应用黑色或蓝黑色钢笔、签字笔填写，字迹应清楚。
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