I had them contact me awhile back asking if I wanted to sale their chain in my shop. They seem to only sell by the loop, although he said he could sell by the roll as well. At the time I only saw 3/8 LP.
The Holzfforma brand chain also claims German cutters, and I’ve tested several rolls of their chain and have been happy with it. I’ve used the Jeremy Well chain in the past and the Holzfforma is much better chain. The tooth is very similar to Still RS33 in design with the hook too and flat back gullet, but it’s hard to say if the teeth are actually made in Germany though. Regardless it’s good chain, and all I use anymore, and I sell it 10-1 vs other brands now because of the price. I buy it by the 100’ roll and spin chains to length for people.