Dimensions:

20*30 double-sided white green board without hook, pen holder) send 1 box of chalk 1 eraser 2 white

30*40 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic suction 2 no mark nail 1 pen holder

30*40 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

45*60 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic suction 2 no mark nail 1 pen holder

45*60 double-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic attraction 2 no mark nail 1 pen holder

45*60 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

50*70 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic attraction 2 unmarked nails 1 pen holder

50*70 double-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

50*70 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

60*90 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic suction 2 unmarked nails 1 pen holder

60*90 double-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic suction 2 no mark nail 1 pen holder

60*90 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

70*100 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

70*100 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

90*120 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

90*120 double-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

90*120 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

100*150 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

100*150 double-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 no mark nail 1 pen holder

100*150 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 2 nails 1 pen holder 5 whiteboard pen

100*200 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 3 no mark nail 1 pen holder

100*200 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 3 nails 1 pen holder 5 whiteboard pen

120*240 single-sided green board to send 4 boxes of chalk 1 wipe 12 magnetic 3 no mark nail 1 pen holder

120*240 double-sided white green board to send 4 boxes of chalk 1 wipe 12 magnetic 3 nails 1 pen holder 5 whiteboard pen