Hardware Labs
Hardware Labs Performance Systems, Inc., is a pioneer in the computer watercooling industry. HWLabs was the first company to develop and manufacture the first radiators specifically designed for PC watercooling and has gone on to set the standard in the water cooling business. Based in Asia Hardware Labs products are widely used around the world in the form of not only hardware labs products themselves but also as an OEM producing products like radiators for Corsair.
If you want what the water cooling comunity regard as the best radiators on the trade then choose hardware Labs!