Factory outlets, shelf; This whiteboard pen can write different types of surface materials (for example: white, glass, porcelain, etc.), easy to erase, without leaving any traces. Special fiber tip pen, writing smooth, unique ink formulations, brightly colored non-toxic. Easily erased, leaving no trace, writing length of 1000 meters. Suitable for offices, factories, schools, hotels and other uses. 12pcs / box , 1152pcs / carton, one from the grant.