CTUM (CSMG) will most likely always retain atleast 50% ownership of LTC, even well after the IPO.
Though I don't know what the numbers are, I believe LTC will be leased on a per use basis, as well as a mark-up between manufacturing costs of the 'tools', and actual selling price. I'm not sure how much of the apparatus to be used with the welder is throw-away, but I know atleast some of it is.
I believe there are well over a dozen different 'tools' to assist the LTC welders.