It is sometimes listed as "RTI Record Technology Inc." on older test pressings and just "RTI" or "Record Technology Inc" in the fine print of some releases but as usual, its the same company..
Matrix number scheme used for the processing:
Side A: xxxxx (2) or (3)
Side B: xxxxx (2) or (3)
later adjusted to include the side identifiers:
Side A: xxxxx.1 (2) or (3)
Side B: xxxxx.2 (2) or (3)
Only the sequential numbers should be added for the role Mastered At. See here for an example.
Note: a new sequential number counting started in September 1995.
(2) and (3) indicate the matrix process used:
The 3-step process means that the master lacquer disc is used to make negative fathers, positive mothers, and finally stampers.
The 2-step means that the master discs is used to male a negative father, a mother and then convert the father into a stamper. This is used for small runs and in the case that extra stampers a required, the mother is used to produce those stampers.
Numbers .1 and .2 are not always included in the matrix scheme.
Other identifiers are 1 or 2 crosses (+ or ++) with dots in the quadrants, standing for a pressing by RTI.
A record processed by RTI doesn't necessarily mean the company also pressed it. Please only use the Mastered At role in LCCN field when the scheme appears.
Please use Pressed By only when it's credited on release and/or the information is taken from a reliable source.