那是铅笔头

1,Prouduct name:High-quality pencil leads; 2,Hardness of pencil leads:4H,3H, 2H,H,HB,B,2B,3B,4B,5B,6B,7B,8B; 3,Dia of pencil leadls:2.0mm,2.1mm,2.2mm,2.3mm,2.4mm,3.0vmm,4.0mm,7.2mm; 4,Type of pencil leads: High-quality graphite pencil lead; 5,Normal packaging of pencil lead:L*W*H:36.5CM*19.5CM*21CM;20KG/CTS;21KG/GROSS;800CTS/20GP;80000GROSS/20GP(Dia of pencil leadls:2.2mm); 6,certification of pencil leads:Tested by EN71-3, ASTM F963 and R.S.c.H-3.