[impendia]

As a couple of commenters noted, a Korean company (Sejongmall) purchased some of the machinery, adopted the Hagoromo Fulltouch brand name, and recently started producing and selling chalk. You can buy it on Amazon, for example.

In my opinion (which seems to mostly be shared by other mathematicians), the quality is quite good -- approximately comparable to the Japanese original. Also the price is cheaper, $17.00 for a 72-piece box.

We chalk snobs have breathed a collective sigh of relief.