deli zhengzi propelling pencil 0.7 write constantly only for pupils non-toxic 0.5 children hb press pencil leads 得力正姿自动铅笔0.7写不断小学生专用无毒0.5儿童hb按动铅笔芯

[automatic lead supplement-write constantly] 0.7 [automatic lead supplement-write constantly] 0.5 [automatic lead supplement-write constantly] 0.5+0.7

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