Ballpoint Cwj Mem Cov lus tsim ntawm Daim Npav Daim Npav Tag Nrho yog "hollow out", uas tshawb txog kev sib raug zoo ntawm sab hauv kev ua haujlwm thiab cov tsos ntawm cov khoom. Lub hollow slender tau milled rau ntawm lub cev los qhia cov hlau Refill sab hauv. Cov duab tsim qhov chaw tsim nyog rau tuav tus cwj mem, uas pom qhov sib npaug ntawm kev zoo nkauj thiab tib neeg engineering. Tsis tas li ntawd, Tag Nrho hnyav 19 grams, uas muab kev nkag siab zoo ntawm kev tuav los txhim kho nws cov neeg siv kev paub.
Lub npe Project : Full, Tus tsim qauv lub npe : SONG LIU and LEI WANG, Neeg lub npe : Rongqi.
Qhov tsim tau zoo no yog tus yeej ntawm cov nyiaj tsim qauv tsim hauv kev zam, kev sib tw thiab cov ris tsho hnav ua qauv. Koj yuav tsum pom cov nyiaj tau txais txiaj ntsig tsim qauv zoo nkauj tsim qauv tsim qauv txhawm rau nrhiav tau ntau lwm yam tshiab, tsim tshiab, qub thiab muaj tswv yim zam, tsoos tsho hnav thiab tsoos tsho tsim qauv.