2B pencil identify true and false, to three to see:
A flat section, complete refill center;
Second, clean finish bright, clear printing, material redness, full color uniformity;
III. Look inside, poor pencil cross section is not flat, the cartridge is not centered defects, color dim, fuzzy printing defects, whitish material, uneven color.
China's production of high-level pencil, generally use red pencil board production, a good pencil surface is red, off to the future, the color red is more adequate. Inferior red pencil method, commonly used immersion method, even using surface painted to methods of production, the surface is red off to later, which is completely white.