sijin loose spiral notebook wholesale student loose spiral notebook shell loose-leaf inner core coil notebook removable thickened notebook 思进活页本批发学生活页本外壳活页内芯线圈本可拆卸加厚笔记本子

frosted white shell [buckle/excluding refill]] matte black shell [buckle/excluding refill]] matte black shell [strap/excluding refill]] frosted white shell [strap/excluding refill]] horizontal line refill [60 sheets]] checkered refill [60 sheets]] english refill [60 sheets]] blank refill [60 sheets]] refill wrong questions [60 pieces]] cornell horizontal line refill [60 sheets]] connell checkered refill [60 sheets]]

a4 b5 a5