... of pencil 4.Tested by EN71-3, ASTM-F963-08 and R.S.c.H-3. Product nameHigh-quality natural wooden pencilWood ... materialhigh grade basswood, poplarLead Hardness8H,7H,6H,5H,4H,3H,2H,H,HB,B,2B,3B, ... trader specializing in the research, development and production of pencil leads, pencil boards, pencil and wedge joint boards, dressed lumbers, semi-finished flooring ...