Cong He (聪鹤）Auto Advancing Lead Mechanical Pencil Review

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Purchased in Sep. 2025 in China as NOS through private sales.

Here is what I could find:

Patent (CN97217145.2) registered in 1997, by 珠海市春天文化制品有限公司 (Zhuhai Spring Stationary Co., Ltd):




Package:



Cong He Auto Advancing Lead Pencil: