Paint or wood improvements are probably simple enough to introduce, and won’t likely disrupt the user base, but a change to a graphite formula could cause problems.
Now considering this matter, I’ve been wondering just how a major pencil manufacturer introduces product improvements. The features of note include strength and density. The line was announced in 2008, and started with mechanical pencils refills woodcase pencils were introduced a couple of years later. The graphite is claimed to benefit from some important and noteworthy quality advances. The Mitsubishi NanoDia pencil is supposed to be something special.
