Sorry for being late to reply to this topic, but for a website that had crmaris as a power supply reviewer, it is quite surprising that most users do not know Colorful/Segotep/Chaintech/Fortech and deride them as if they were on the same level of terribleness of OEMs such as Linkworld/Deer/Diablotek that produce actual fire hazards.
Colorful (Or Colorful Group, to be more precise) is one the oldest and biggest manufacturers of various computer components in Asia. Back in 1995, their previous name as an OEM was "Seethru". They historically held the biggest marketshare of Nvidia graphics cards in China, and they were mostly known for their motherboards and graphics cards.
Segotep and Chaintech are brands owned by CFG (Colorful Group). Their power supply platforms are used and/or rebranded by other brands.
Enermax is a major brand that used Chaintech/Segotep/Colorful/Fortech PSU platforms previously, and they perform well in those applications.
"Segotep" and "Colorful" branded power supplies are akin to CFG selling their power supply platforms straight from the factory and have a lot of reviews found on non-english websites, and their modern power supplies perform well.
Usually though, their base platforms that they sell use second tier capacitors such as Samxon/Teapo/Capxon/Elite (Which are not bad per se, just cheaper compared to Japanese branded capacitors.) and cheaper Rifle/HDB fans as compared to the likes of Enermax that like to use full coverage of Japanese capacitors coupled with higher end fans in their units. Segotep's higher end units use Japanese capacitors, though.
Also, 110V certification is harder to pass than 220V. You can get away with cheaper switching mosfets used on a full bridge primary topology design that uses four mosfets, but it will fail to perform well on lower input voltages as compared to a half bridge primary topology that only uses two but much more capable (and expensive) switching mosfets. If a psu performs well at 110V, it will have no problem passing said tests on 220v also.
Segotep PSUs have found themselves in hwbusters(crmaris' website) "Best ATX v3.x & PCIe 5.x Ready PSU Picks" so it is not out of the question that Segotep/Chaintech/Coloful power supplies can also compete in performance, and not just in price. To be specific, The Segotep GM750M is the best on the "ATX v3.x Transient Response (200% Load)" category. There are also a lot of chinese/korean reviews of Segotep that use actual DC load testers with proper testing methodologies, and I'll place them here when I find them again.
No one should blindly trust a manufacturer on their products. Even supposedly good companies like Seasonic released duds like the S12II/III (that use group regulation and lack various protection mechanisms), Older Focus units that were suspectible to shutdowns due to the transient demands of higher power gpus like the Vega 64 and the like, and rebrands of lower end XHY(Company behind Cooler master MWE v2 psus), RSY(Shenzhen Rui Sheng Yuan, they used to produce psus for Topower, Rasurbo, and Ultra. Superflower uses RSY factories to manufacture their psu designs from time to time) and Helly technology (1stplayer) psus under the Seasonic B12 branding.
Corsair also had duds with the older VS and CX power supplies, and their earlier digitally capable psus that had problems with specific motherboards due to their erratic PG-ON signalling.
And before someone accuses me being a colorful shill, I am not. I'd rather shill for Superflower if that was the case (due to the Leadex platform psus and their surprisingly excellent half-bridge units of the old used in mad dog/azza/kingwin power supplies ). It is good to be wary of psu OEMs/ODMs that are relatively unknown or have proven to have a chronic case of being bad (Like Logisys/Linkworld and the like), but to be dismissive and hyperbolic about the supposed faults of something does not help anyone in this case as Segotep branded Colorful power supplies are excellent budget options. I got a Segotep GM850 for 62$ on sale, and I doubt you can find something better performing than at its price range.
Sources:
Enermax DF500 Review@Toms by crmaris
About colorful
Segotep KL1250G ATX 3.0 Review (Higher end version of the GM1000W, which is I assume is the 1000w PSU being talked here)
Chieftronic powerup 850w review @ Techpowerup where crmaris tells about the case for half and full bridge primary topologies in power supplies.
GN video with jonnyguru where jonnyguru states that psu oems like to use full bridge primary topologies to cut costs
Best ATX v3.x & PCIe 5.x Ready PSU Picks 2024 @Hwbusters
Segotep KL-M750G SFX ATX3.0/PCIe5.0 750W @ F14Labs
Colorful EU