... 1) Dia: 7.2mm; 2) Hardness:HB; 3) Length:185mm; 4) Certification: EN71-3, ASTM F963-08, ST2002-3 [Pencil To ... WritePromotional School Kit 1, the pencil lead is made of pure ... pencil lead manufacturer.7, the leads are used to wooden pencil, paper pencil, woodless pencil, golf ... This kind of product has long-term exportrd to Japan market! The quality has reached Japanese ...