The method of pasting product barcodes on Temu cartons is as follows:

1. Prepare product barcodes: First, you need to get product barcodes from suppliers or manufacturers. Product barcodes usually contain a set of numbers and a black and white stripe. Make sure you have enough barcode stickers and each product has a unique barcode.

2. Choose a suitable location: Choose a suitable location on the Temu carton to paste the product barcode. Usually, the barcode sticker is pasted on the top or side of the carton. Make sure the barcode sticker is large enough so that the scanning device can read it easily. At the same time, choose an area that is flat and not wrinkled or damaged.

3. Clean the sticker surface: Before pasting the barcode sticker, make sure the surface of the carton is clean, dust-free and oil-free. You can use a clean cloth or paper towel to gently wipe the surface.

4. Paste the barcode sticker: Tear off the backing of the product barcode sticker and paste the barcode sticker in the selected position. Make sure the barcode sticker is flat and firmly pasted on the carton.

5. Check the sticker: After pasting, check whether the product barcode sticker is flat, clear and easy to scan. If the barcode sticker is wrinkled or damaged, please re-paste it.

Please note that when pasting product barcode stickers, be sure to follow the requirements of suppliers or manufacturers. In addition, when using Temu cartons to pack products, make sure to follow relevant regulations and standards to ensure product safety and compliance.