-Carpet (cardboard) conductive floor: to withdraw upon delivery to the customer.
- Protection / Film sill left side: to withdraw upon delivery to the customer
- Driver Seat Cover: to withdraw upon delivery to the customer.
- Storage Cover Twizy: removing during preparation for transportation
- Transport cover on vehicle stillage: to remove when car is delivered to dealer.

upon delivery - во момент доставки
during preparation - на этапе подготовки...
when - в момент доставки или во время или после?

Спасибо

upon delivery - после доставки
during preparation -- при подготовке к перевозке
when ...is delivered - после доставки