The short answer is: it depends on the exact power configuration. The featured product is described as a 12V DC fan, while its listing also presents several AC input/power-cord choices. Singapore mains compatibility should be verified from the exact variant and seller information before purchase.
Verify the AC side
Singapore uses 230V nominal mains. Do not assume a plug variant alone proves electrical compatibility.
Verify the DC output
The fan itself is specified as 12V DC. Use the correct power supply/controller arrangement.
Select the correct variant
Marketplace listings can offer several plug and voltage options on one product page.
When in doubt
Follow the seller's current specification and ask the seller before connecting anything to mains power.
Search topics covered
250mm fan Singapore · DC fan Singapore · fan voltage Singapore
Important buying note
Marketplace information can change. Confirm the current product specification, selected variant, shipping, taxes, coupon eligibility and return terms on the AliExpress checkout page before purchasing.