There are 5 stages from concept to sale of a product.
1. Design - Selecting a design type and creating the technical drawing.
2. Prototyping - Create the display to review what it looks like in real life.
3. Fitment check - Check that the tolerance built in is correct and that the item fits.
4. Create website listing - Product is close to being released and users can opt in for stock notification, add to favourite etc.
5. Web listing live - Products ready to be purchased or pre-ordered.

The 4 stages of restock
1. Restock ordered
2. En-route
3. Landed/in UK/Customs
4. Restock on the website imminent