Here you can check some international standards of shipping label.
https://labelcropper.com/knowhow Maybe you are developing. You will get help. If someone is getting 400-500 orders daily, then bulk shipping label printing will be required.
Ensure the confidentiality of buyer and seller personal contact information on the shipping label and the frontend by concealing details such as phone numbers (e.g., Phone: xxxxxxxxxx). We observed that Flipkart’s and Amazon invoices now adopt a new format where buyer and seller phone numbers are appropriately hidden for enhanced privacy and security.
Please pay attention to these also. THANKS.