In the past I have ordered a couple things from Temu, including a sling, but not for the SKS, and some pouches. Its the typical Chinese sourced stuff, some is the same you buy on other outlets, like EBay and cheap firearm related vendors, some is even worse. It is relatively slow to ship, and comes in bags instead of boxes, but it is usually much cheaper than anywhere else.
What's irritating with much of the Chinese sourced items and not just gun stuff, they claim its US warehoused, and then you have to wait for it to get into the country anyway, its out right fraud sometimes. Temu makes no such claims about it, its coming straight from wholesalers in China usually.