I can confirm that the DSE T2000 (and others) was made by Xytronics in Taiwan.
<quote ex
http://www.xytronic.com/corp.htm >
Any where that a connection is made, a soldering station is needed - creating a worldwide market for XYTRONIC product. Ninety percent of XYTRONIC product is exported with major customers in the US, Canada, Australia, Japan and Western Europe.
Approximately 50% of the production is sold under the XYTRONIC logo while the remainder is sold on ODM or OEM basis. Currently, the company supplies such major corporations as
Philips N.V. and Smith of Australia under private label arrangements. XYTRONIC's happy customer list includes IBM, Logitech, Taiwan Delta, General Instruments, Digital Equipment Corp., Siemens, Hewlett Packard and more.......
</quote>
Personally, I need new tips and a new element would be nice too. The info I was looking at is all in Chinese but since I don't speak (or read) Chinese then it becomes very difficult to communicate with them.
I suspect that Xytronics in the US is/was just their US agent and I think that we could get the product direct from Taiwan without the horrendous US freight charges.