What are the eight common differences between products and services?

What will be an ideal response?

1) Most service products cannot be inventoried, 2) intangible elements usually dominate value creation, 3) services are often difficult to visualize and understand, 4) customers may be involved in co-production, 5) people may be part of the service experience, 6) operational inputs and outputs tend to vary more widely, 7) the time factor frequently assumes great importance, and 8) distribution may take place through non-physical channels.