(1) Performance requirements. This standard sets initial writing performance, writing performance, permeability, drying, copyability, water resistance, light resistance, intermittent writing, writing lubricity, storage, scratch resistance, ethanol resistance, hydrochloric acid resistance, resistance to Performance requirements that pens or refills need to meet, such as ammonia resistance and bleach resistance. These projects correspond to the industry standard QB/T2625-2011 standard. (2) Mechanical performance and appearance requirements. Corresponds to the industry standard QB/T2625-2011 standard. (3) Safety requirements correspond to the national standard GB21027-2007 "General Safety Requirements for Student Supplies".