@superautobacs said he heard a while back that Tsunoda were a hobbyist line. And then check out anoother's review at
(I have a pair of the PL-150s that anoother reviews). On the other hand, their catalog does not list a "DIY" line,
so maybe the DIY pliers that anoother has are fake? Dunno, but I have my suspicions.
Since some Japanese tool companies offshore some production to PRC, ROC, Thailand, and Vietnam, I have been very careful when ordering my Tsunoda pliers to get ones that have "Made in Japan" stamped on them. I have been happy with the King TTC tools and I'm going to soon order another pair of PL-150s and give the two to my grandkids.