Upon cracking open the TX750 and kissing the warranty goodbye, it was immediately evident that it is indeed a CWT built power supply.
It is very similar in construction to the CWT built Corsair VX550.
The thick black heatsink fins and green tape wrapped components are a telltale sign.
Interestingly, the TX750 board could have easily fit in a standard size PSU casing had it not been for the oversize 140mm fan.
Read more here.