Here's the info on who makes what. This was released a year ago and some may have changed. It's a decent guide however.
Who makes what. And this is not a complete and super accurate list either:
I have no idea who to credit for this list. I didn't make it up. If you know tell me so I can credit the author
At the bottom of this thread is a link to the Underwriters Laboratories site where you can post your ul listing number of your power supply and it will tell you the original manufacter
Antec
Antec NeoHE 430W - SEA SONIC ELECTRONICS CO LTD
Antec Phantom 500 500W - CHANNEL WELL TECHNOLOGY CO LTD
Antec SmartPower 2.0 SP-500 500W - MICROS SYSTEMS INC
Antec True Power Trio 650W only tested as 500W(1 single 12v rail) Sea Sonic Electronics Co. Ltd.
Antec TPQ Enhance
Aopen
Aopen Prima Power 700 - FSP GROUP INC
ATIX
ATRIX PSCI-500BLK ATX12V 500W - UNITEK ELECTRONIC CO LTD
BeQuiet
BeQuiet BQT B5-520W-S1.3 520W - TOPOWER COMPUTER INDUSTRIAL CO LTD
Cooler Master
Cooler Master Real Power RS-550-ACLY 550W - ACBEL POLYTECH INC
(also,Enhance,Hipro,Seventeam. Hipro being their lower quality unit)
Coolmax
COOLMAX CA-400 ATX v2.01 400W - ATNG POWER CO LTD
Corsair Memory
Corsair HK620W 620W - SEA SONIC ELECTRONICS CO LTD
DYNAPOWER
DYNAPOWER EP-45X.0562B 450W - POWER TECH INDUSTRIAL CO LTD
DYNAPOWER EP-35X.0661B 350W - POWER TECH INDUSTRIAL CO LTD
Enermax
Enermax Coolergiant EG485AX-VHB(W) 480W - ENERMAX TECHNOLOGY CORP
Enermax Noisetaker EG701AX-VE(W) 600W - ENERMAX TECHNOLOGY CORP
ENERMAX Liberty ELT500AWT 500W - ENERMAX TECHNOLOGY CORP
FSP Group (Fortron Source)
FSP Group FX700-GLN 700W Quad. SLi Power Supply - FSP GROUP INC
HEC
HEC AcePower ACE580UB 580W - COMPUCASE ENTERPRISE CO LTD
MSI
MSI TurboStream 600W - MSI COMPUTER CORP
MSI TurboStream 460W - MSI COMPUTER CORP
Mushkin
Mushkin Enchanced XP-650 - TOPOWER COMPUTER INDUSTRIAL CO LTD
OCZ Technology
OCZ PowerStream 600W - TOPOWER COMPUTER INDUSTRIAL CO LTD
OCZ PowerStream 600W SLI - TOPOWER COMPUTER INDUSTRIAL CO LTD
OCZ Game Xstream 600W & 700W - FSP Group
PC Power & Cooling
PC Power & Cooling Silencer 750W - PC POWER & COOLING INC
RAIDMAX
RAIDMAX RX-470XPW ATX12V 470W - TOPOWER COMPUTER INDUSTRIAL CO LTD
RAIDMAX RX-450KW ATX12V 450W - SUN PRO ELECTRONICS CO LTD
RAIDMAX RX-380K ATX12V 380W - SUN PRO ELECTRONICS CO LTD
Rosewill
Rosewill RD600-2DC-SL 600W - SOLYTECH ENTERPRISE CORP
Rosewill RP550S-2MK 550W Modular Cable Power - ATNG POWER CO LTD
Rosewill RD550-2DB-SL 550W - SOLYTECH ENTERPRISE CORP
Rosewill RD550-2DC-SL 550W - SOLYTECH ENTERPRISE CORP
Rosewill RD450-2-DB 450W - SOLYTECH ENTERPRISE CORP
Rosewill RV350 ATX 350W - ATNG POWER CO LTD
Scythe
Scythe Kamariki-2 KMRK-550A-2 550W -TOPOWER COMPUTER INDUSTRIAL CO LTD
Scythe Kamariki-2 KMRK-450A-2 450W - TOPOWER COMPUTER INDUSTRIAL CO LTD
Scythe KAMARIKI-2 KMRK-400A-2 400W - TOPOWER COMPUTER INDUSTRIAL CO LTD
Seasonic
SeaSonic S12-600 ATX12V 600W - SEA SONIC ELECTRONICS CO LTD
Silverstone
Silverstone SSt-ST85ZF 850W - ENHANCE ELECTRONICS CO LTD
Zeus models so far all I have found are made by Silverstone
SPARKLE
SPARKLE FSP650-80GLC 650W - FSP GROUP INC
SPARKLE FSP550-60PLG 550W - FSP GROUP INC
SPARKLE FSP460-60GLC-B 460W - FSP GROUP INC
SPARKLE FSP400GLCR-B204 400W - FSP GROUP INC
SPARKLE FSP350-60GLC-B 350W - FSP GROUP INC
SPARKLE FSP350-60PN 350W - FSP GROUP INC
SPARKLE FSP300-60THA 300W - FSP GROUP INC
SPARKLE FSP250-60ATV 250W - FSP GROUP INC
Spire
Spire SP-500W -TOPOWER COMPUTER INDUSTRIAL CO LTD
Thermaltake
Thermaltake ToughPower 550W - CHANNEL WELL TECHNOLOGY CO LTD
Thermaltake ToughPower 750W - CHANNEL WELL TECHNOLOGY CO LTD
Ultra
X3 & Xfinity (only are manufactured by Andyson International Co LTD)
everything else is so far made by Wintect
Take a look on the UL record posted on the PSU sticker and then go to this website: http://www.ul.com/onlinetools.html and go to the Certifications Directory and enter the UL File Number (ex. E12345). The UL File Number is an alphanumeric designation assigned to a company upon successful completion of a product evaluation or company certification.