Nothing on Taobao has a UL label...although to be fair many offbrand consumer electronics no longer bother with UL either. Reason being, if the good catches fire and kills someone or burns someone's house down...they'll just unlist their entire store and relist.
Which is why UL, a relic of brick and mortar retail liability, is a big deal. They clear circuit designs as safe for retail sale.
UL doesn't green light less than 20AWG wiring...which isn't good enough for a PSU for a computer; and this isn't even 20AWG
Thing with cheap goods, never trust a rating stamp. The seller/maker lies. For 5A+ of load...that wiring is not good enough, and is a fire hazard. You want at least 16AWG or 1mm copper (bare minimum) for 120V service.
Someone on r/SFFPC got one of these tails of AliExpress, it was using 26AWG wiring --which is a joke and a danger to people and property.
Maybe it is bare minimum okay for 240V residential use outside the USA, someone else would have to say.
The insulation isn't the problem. The gauge AKA cross sectional area is too small especially for 120V service. Wiring will overheat (resistance of the wire), the excuse for insulation will melt, and the electrical service will ground out on the case. AKA an electrical fire.