Hi Elaine,
Yes, your customer is from Singapore. Shopee International Platform (SIP) is a feature that allows sellers to sell across different country / region through the support given by Shopee Malaysia.
Seller will be able to sell through Shopee regional platform to other regions as per below:
Once overseas buyers place an order, seller will be informed and will need to send the item to Shopee Malaysia Warehouse.
Once parcel arrives at Shopee Malaysia Warehouse, the parcel will be processed by Shopee to be sent overseas to the buyer's location.
Therefore any oversea buyer, the parcel will sent to Shopee warehouse first (which is the address above), then from Shopee warehouse, Shopee will arrange the delivery to your Singapore buyer.
For more details, u can refer to below link and attachment.
Link:
https://hshopeelp.shopee.com.my/s/article/What-is-Shopee-International-Platform
Attachment(s):-